156401693087 has 2 divisors, whose sum is σ = 156401693088. Its totient is φ = 156401693086.

The previous prime is 156401693069. The next prime is 156401693209. The reversal of 156401693087 is 780396104651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156401693087 - 2⁸ = 156401692831 is a prime.

It is a super-2 number, since 2×156401693087² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156401693587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78200846543 + 78200846544.

It is an arithmetic number, because the mean of its divisors is an integer number (78200846544).

Almost surely, 2^156401693087 is an apocalyptic number.

156401693087 is a deficient number, since it is larger than the sum of its proper divisors (1).

156401693087 is an equidigital number, since it uses as much as digits as its factorization.

156401693087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 156401693087 in words is "one hundred fifty-six billion, four hundred one million, six hundred ninety-three thousand, eighty-seven".