13561016104431 has 12 divisors (see below), whose sum is σ = 20220009675840. Its totient is φ = 8749042647840.

The previous prime is 13561016104387. The next prime is 13561016104457. The reversal of 13561016104431 is 13440161016531.

13561016104431 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 1 + 0 + 1 + 610 + 4 + 4 + 31 = 666.

It is not a de Polignac number, because 13561016104431 - 2²¹ = 13561014007279 is a prime.

It is a super-2 number, since 2×13561016104431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561016104631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24302895966 + ... + 24302896523.

It is an arithmetic number, because the mean of its divisors is an integer number (1685000806320).

Almost surely, 2^{13561016104431} is an apocalyptic number.

13561016104431 is a deficient number, since it is larger than the sum of its proper divisors (6658993571409).

13561016104431 is a wasteful number, since it uses less digits than its factorization.

13561016104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48605792526 (or 48605792523 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 13561016104431 in words is "thirteen trillion, five hundred sixty-one billion, sixteen million, one hundred four thousand, four hundred thirty-one".