157887986820 has 24 divisors (see below), whose sum is σ = 442086363264. Its totient is φ = 42103463136.

The previous prime is 157887986813. The next prime is 157887986881. The reversal of 157887986820 is 28689788751.

157887986820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 1315733164 + ... + 1315733283.

It is an arithmetic number, because the mean of its divisors is an integer number (18420265136).

Almost surely, 2^157887986820 is an apocalyptic number.

157887986820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157887986820 is an abundant number, since it is smaller than the sum of its proper divisors (284198376444).

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

157887986820 is a wasteful number, since it uses less digits than its factorization.

157887986820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631466459 (or 2631466457 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 69.

The spelling of 157887986820 in words is "one hundred fifty-seven billion, eight hundred eighty-seven million, nine hundred eighty-six thousand, eight hundred twenty".