97887905720 has 32 divisors (see below), whose sum is σ = 240270315120. Its totient is φ = 35595601920.

The previous prime is 97887905681. The next prime is 97887905767. The reversal of 97887905720 is 2750978879.

It is a congruent number.

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, 111235817 + ... + 111236696.

Almost surely, 2^97887905720 is an apocalyptic number.

It is an amenable number.

97887905720 is an abundant number, since it is smaller than the sum of its proper divisors (142382409400).

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

97887905720 is a wasteful number, since it uses less digits than its factorization.

97887905720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222472535 (or 222472531 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 62.

The spelling of 97887905720 in words is "ninety-seven billion, eight hundred eighty-seven million, nine hundred five thousand, seven hundred twenty".