13856160861 has 32 divisors (see below), whose sum is σ = 21265597440. Its totient is φ = 8907494400.

The previous prime is 13856160859. The next prime is 13856160881. The reversal of 13856160861 is 16806165831.

13856160861 is a `hidden beast` number, since 1 + 3 + 8 + 561 + 6 + 0 + 86 + 1 = 666.

It is not a de Polignac number, because 13856160861 - 2¹ = 13856160859 is a prime.

It is a super-2 number, since 2×13856160861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856160881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205741 + ... + 264653.

It is an arithmetic number, because the mean of its divisors is an integer number (664549920).

Almost surely, 2^13856160861 is an apocalyptic number.

It is an amenable number.

13856160861 is a deficient number, since it is larger than the sum of its proper divisors (7409436579).

13856160861 is a wasteful number, since it uses less digits than its factorization.

13856160861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59234 (or 59228 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 13856160861 in words is "thirteen billion, eight hundred fifty-six million, one hundred sixty thousand, eight hundred sixty-one".