156000055170731 has 2 divisors, whose sum is σ = 156000055170732. Its totient is φ = 156000055170730.

The previous prime is 156000055170719. The next prime is 156000055170767. The reversal of 156000055170731 is 137071550000651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156000055170731 - 2³⁰ = 155998981428907 is a prime.

It is a super-2 number, since 2×156000055170731² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (156000055170431) 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 as a sum of consecutive naturals, namely, 78000027585365 + 78000027585366.

It is an arithmetic number, because the mean of its divisors is an integer number (78000027585366).

Almost surely, 2^{156000055170731} is an apocalyptic number.

156000055170731 is a deficient number, since it is larger than the sum of its proper divisors (1).

156000055170731 is an equidigital number, since it uses as much as digits as its factorization.

156000055170731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110250, while the sum is 41.

The spelling of 156000055170731 in words is "one hundred fifty-six trillion, fifty-five million, one hundred seventy thousand, seven hundred thirty-one".