156846767648639 has 2 divisors, whose sum is σ = 156846767648640. Its totient is φ = 156846767648638.

The previous prime is 156846767648609. The next prime is 156846767648653. The reversal of 156846767648639 is 936846767648651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156846767648639 - 2⁸ = 156846767648383 is a prime.

It is a super-2 number, since 2×156846767648639² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156846767648609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78423383824319 + 78423383824320.

It is an arithmetic number, because the mean of its divisors is an integer number (78423383824320).

Almost surely, 2^{156846767648639} is an apocalyptic number.

156846767648639 is a deficient number, since it is larger than the sum of its proper divisors (1).

156846767648639 is an equidigital number, since it uses as much as digits as its factorization.

156846767648639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52672757760, while the sum is 86.

The spelling of 156846767648639 in words is "one hundred fifty-six trillion, eight hundred forty-six billion, seven hundred sixty-seven million, six hundred forty-eight thousand, six hundred thirty-nine".