97621039820 has 24 divisors (see below), whose sum is σ = 209771724624. Its totient is φ = 38140312896.

The previous prime is 97621039807. The next prime is 97621039883. The reversal of 97621039820 is 2893012679.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 56755559 + ... + 56757278.

It is an arithmetic number, because the mean of its divisors is an integer number (8740488526).

Almost surely, 2^97621039820 is an apocalyptic number.

It is an amenable number.

97621039820 is an abundant number, since it is smaller than the sum of its proper divisors (112150684804).

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

97621039820 is a wasteful number, since it uses less digits than its factorization.

97621039820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113512889 (or 113512887 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 97621039820 in words is "ninety-seven billion, six hundred twenty-one million, thirty-nine thousand, eight hundred twenty".