157511664427 has 6 divisors (see below), whose sum is σ = 170559968172. Its totient is φ = 145395382392.

The previous prime is 157511664341. The next prime is 157511664463. The reversal of 157511664427 is 724466115751.

It is not a de Polignac number, because 157511664427 - 2³¹ = 155364180779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157511664467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 466010673 + ... + 466011010.

It is an arithmetic number, because the mean of its divisors is an integer number (28426661362).

Almost surely, 2^157511664427 is an apocalyptic number.

157511664427 is a deficient number, since it is larger than the sum of its proper divisors (13048303745).

157511664427 is an equidigital number, since it uses as much as digits as its factorization.

157511664427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932021709 (or 932021696 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The spelling of 157511664427 in words is "one hundred fifty-seven billion, five hundred eleven million, six hundred sixty-four thousand, four hundred twenty-seven".