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13103120220020 = 2253144773472027
BaseRepresentation
bin1011111010101100111011…
…0100110111111101110100
31201101122102222101110201122
42332223032310313331310
53204140142234020040
643511253524443112
72521445351121305
oct276531664677564
951348388343648
1013103120220020
1141a2002848326
121577580549498
13740807a5249c
143342a16247ac
1517ac977b11b5
hexbeaced37f74

13103120220020 has 48 divisors (see below), whose sum is σ = 28404877767168. Its totient is φ = 5072051537280.

The previous prime is 13103120220019. The next prime is 13103120220097. The reversal of 13103120220020 is 2002202130131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27523247 + ... + 27995273.

It is an arithmetic number, because the mean of its divisors is an integer number (591768286816).

Almost surely, 213103120220020 is an apocalyptic number.

13103120220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13103120220020 is an abundant number, since it is smaller than the sum of its proper divisors (15301757547148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13103120220020 is a wasteful number, since it uses less digits than its factorization.

13103120220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516840 (or 516838 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13103120220020 its reverse (2002202130131), we get a palindrome (15105322350151).

The spelling of 13103120220020 in words is "thirteen trillion, one hundred three billion, one hundred twenty million, two hundred twenty thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 44773 89546 179092 223865 447730 472027 895460 944054 1387963 1888108 2360135 2775926 4720270 5551852 6939815 9440540 13879630 14632837 27759260 29265674 58531348 73164185 146328370 292656740 21134064871 42268129742 84536259484 105670324355 211340648710 422681297420 655156011001 1310312022002 2620624044004 3275780055005 6551560110010 13103120220020