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13131659783918 = 213505063837843
BaseRepresentation
bin1011111100010111001111…
…1010101010111011101110
31201111101002221121112101202
42333011303322222323232
53210122114401041133
643532333510405502
72523505525323044
oct277056372527356
951441087545352
1013131659783918
114203118674075
121581006360892
137434056984c0
1433580bb08394
1517b8b80a82e8
hexbf173eaaeee

13131659783918 has 8 divisors (see below), whose sum is σ = 21212681189448. Its totient is φ = 6060766054104.

The previous prime is 13131659783917. The next prime is 13131659783927. The reversal of 13131659783918 is 81938795613131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131659783917) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 252531918896 + ... + 252531918947.

It is an arithmetic number, because the mean of its divisors is an integer number (2651585148681).

Almost surely, 213131659783918 is an apocalyptic number.

13131659783918 is a deficient number, since it is larger than the sum of its proper divisors (8081021405530).

13131659783918 is a wasteful number, since it uses less digits than its factorization.

13131659783918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505063837858.

The product of its digits is 29393280, while the sum is 65.

The spelling of 13131659783918 in words is "thirteen trillion, one hundred thirty-one billion, six hundred fifty-nine million, seven hundred eighty-three thousand, nine hundred eighteen".

Divisors: 1 2 13 26 505063837843 1010127675686 6565829891959 13131659783918