97991436732 has 48 divisors (see below), whose sum is σ = 263368089600. Its totient is φ = 27777097152.

The previous prime is 97991436713. The next prime is 97991436743. The reversal of 97991436732 is 23763419979.

It is a congruent number.

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, 4582107 + ... + 4603442.

It is an arithmetic number, because the mean of its divisors is an integer number (5486835200).

Almost surely, 2^97991436732 is an apocalyptic number.

It is an amenable number.

97991436732 is an abundant number, since it is smaller than the sum of its proper divisors (165376652868).

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

97991436732 is a wasteful number, since it uses less digits than its factorization.

97991436732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185690 (or 9185688 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 60.

The spelling of 97991436732 in words is "ninety-seven billion, nine hundred ninety-one million, four hundred thirty-six thousand, seven hundred thirty-two".