157331317640 has 32 divisors (see below), whose sum is σ = 404566246080. Its totient is φ = 53942165952.

The previous prime is 157331317639. The next prime is 157331317657. The reversal of 157331317640 is 46713133751.

It is a super-3 number, since 3×157331317640³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280948502 + ... + 280949061.

It is an arithmetic number, because the mean of its divisors is an integer number (12642695190).

Almost surely, 2^157331317640 is an apocalyptic number.

157331317640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157331317640 is an abundant number, since it is smaller than the sum of its proper divisors (247234928440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157331317640 is a wasteful number, since it uses less digits than its factorization.

157331317640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561897581 (or 561897577 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 157331317640 in words is "one hundred fifty-seven billion, three hundred thirty-one million, three hundred seventeen thousand, six hundred forty".