157391357644 has 12 divisors (see below), whose sum is σ = 276314861704. Its totient is φ = 78444254304.

The previous prime is 157391357623. The next prime is 157391357657. The reversal of 157391357644 is 446753193751.

It is a super-2 number, since 2×157391357644² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62854722 + ... + 62857225.

Almost surely, 2^157391357644 is an apocalyptic number.

It is an amenable number.

157391357644 is a deficient number, since it is larger than the sum of its proper divisors (118923504060).

157391357644 is a wasteful number, since it uses less digits than its factorization.

157391357644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125712264 (or 125712262 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 55.

The spelling of 157391357644 in words is "one hundred fifty-seven billion, three hundred ninety-one million, three hundred fifty-seven thousand, six hundred forty-four".