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2020121110987 = 71631770483007
BaseRepresentation
bin11101011001011000100…
…110011110100111001011
321011010021201021012020221
4131121120212132213023
5231044202001022422
64144010354130511
7265643325061150
oct35313046364713
97133251235227
102020121110987
11709801780331
1228761a580a37
1311865c0647c5
146dabaca0227
15378346bd3c7
hex1d65899e9cb

2020121110987 has 8 divisors (see below), whose sum is σ = 2322873706496. Its totient is φ = 1720909481832.

The previous prime is 2020121110967. The next prime is 2020121111027. The reversal of 2020121110987 is 7890111210202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020121110987 - 223 = 2020112722379 is a prime.

It is a super-2 number, since 2×20201211109872 (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2020121110907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885240363 + ... + 885242644.

It is an arithmetic number, because the mean of its divisors is an integer number (290359213312).

Almost surely, 22020121110987 is an apocalyptic number.

2020121110987 is a deficient number, since it is larger than the sum of its proper divisors (302752595509).

2020121110987 is a wasteful number, since it uses less digits than its factorization.

2020121110987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770483177.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 2020121110987 in words is "two trillion, twenty billion, one hundred twenty-one million, one hundred ten thousand, nine hundred eighty-seven".

Divisors: 1 7 163 1141 1770483007 12393381049 288588730141 2020121110987