161156816793 has 24 divisors (see below), whose sum is σ = 267629701248. Its totient is φ = 91538168832.

The previous prime is 161156816729. The next prime is 161156816819. The reversal of 161156816793 is 397618651161.

161156816793 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 568 + 1 + 6 + 79 + 3 = 666.

It is not a de Polignac number, because 161156816793 - 2⁶ = 161156816729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161156818793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7648296 + ... + 7669337.

It is an arithmetic number, because the mean of its divisors is an integer number (11151237552).

Almost surely, 2^161156816793 is an apocalyptic number.

It is an amenable number.

161156816793 is a deficient number, since it is larger than the sum of its proper divisors (106472884455).

161156816793 is a wasteful number, since it uses less digits than its factorization.

161156816793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15317813 (or 15317810 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 161156816793 in words is "one hundred sixty-one billion, one hundred fifty-six million, eight hundred sixteen thousand, seven hundred ninety-three".