157215962820 has 48 divisors (see below), whose sum is σ = 503091082368. Its totient is φ = 35935077120.

The previous prime is 157215962803. The next prime is 157215962831. The reversal of 157215962820 is 28269512751.

157215962820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 157215962820.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187161441 + ... + 187162280.

It is an arithmetic number, because the mean of its divisors is an integer number (10481064216).

Almost surely, 2^157215962820 is an apocalyptic number.

157215962820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157215962820 is an abundant number, since it is smaller than the sum of its proper divisors (345875119548).

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

157215962820 is a wasteful number, since it uses less digits than its factorization.

157215962820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374323740 (or 374323738 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 157215962820 in words is "one hundred fifty-seven billion, two hundred fifteen million, nine hundred sixty-two thousand, eight hundred twenty".