157056731775 has 72 divisors (see below), whose sum is σ = 285874143360. Its totient is φ = 82406617920.

The previous prime is 157056731773. The next prime is 157056731779. The reversal of 157056731775 is 577137650751.

157056731775 is a `hidden beast` number, since 1 + 5 + 7 + 0 + 567 + 3 + 1 + 7 + 75 = 666.

It is not a de Polignac number, because 157056731775 - 2¹ = 157056731773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157056731773) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12400396 + ... + 12413054.

Almost surely, 2^157056731775 is an apocalyptic number.

157056731775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157056731775 is a deficient number, since it is larger than the sum of its proper divisors (128817411585).

157056731775 is a wasteful number, since it uses less digits than its factorization.

157056731775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13565 (or 13557 counting only the distinct ones).

The product of its (nonzero) digits is 5402250, while the sum is 54.

The spelling of 157056731775 in words is "one hundred fifty-seven billion, fifty-six million, seven hundred thirty-one thousand, seven hundred seventy-five".