157181876639 has 2 divisors, whose sum is σ = 157181876640. Its totient is φ = 157181876638.

The previous prime is 157181876581. The next prime is 157181876659. The reversal of 157181876639 is 936678181751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157181876639 - 2²⁸ = 156913441183 is a prime.

It is a super-2 number, since 2×157181876639² (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 (157181876659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78590938319 + 78590938320.

It is an arithmetic number, because the mean of its divisors is an integer number (78590938320).

Almost surely, 2^157181876639 is an apocalyptic number.

157181876639 is a deficient number, since it is larger than the sum of its proper divisors (1).

157181876639 is an equidigital number, since it uses as much as digits as its factorization.

157181876639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 62.

The spelling of 157181876639 in words is "one hundred fifty-seven billion, one hundred eighty-one million, eight hundred seventy-six thousand, six hundred thirty-nine".