157927403997 has 60 divisors (see below), whose sum is σ = 267678345088. Its totient is φ = 92625865200.

The previous prime is 157927403969. The next prime is 157927404007. The reversal of 157927403997 is 799304729751.

157927403997 is a `hidden beast` number, since 1 + 57 + 92 + 7 + 403 + 9 + 97 = 666.

It is not a de Polignac number, because 157927403997 - 2¹⁵ = 157927371229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157927403927) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 43938 + ... + 563724.

Almost surely, 2^157927403997 is an apocalyptic number.

It is an amenable number.

157927403997 is a deficient number, since it is larger than the sum of its proper divisors (109750941091).

157927403997 is a wasteful number, since it uses less digits than its factorization.

157927403997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519852 (or 519832 counting only the distinct ones).

The product of its (nonzero) digits is 30005640, while the sum is 63.

The spelling of 157927403997 in words is "one hundred fifty-seven billion, nine hundred twenty-seven million, four hundred three thousand, nine hundred ninety-seven".