97909879380 has 48 divisors (see below), whose sum is σ = 275732360064. Its totient is φ = 25958377600.

The previous prime is 97909879363. The next prime is 97909879391. The reversal of 97909879380 is 8397890979.

It is a super-2 number, since 2×97909879380² (a number of 23 digits) contains 22 as substring.

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, 4705896 + ... + 4726655.

It is an arithmetic number, because the mean of its divisors is an integer number (5744424168).

Almost surely, 2^97909879380 is an apocalyptic number.

It is an amenable number.

97909879380 is an abundant number, since it is smaller than the sum of its proper divisors (177822480684).

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

97909879380 is a wasteful number, since it uses less digits than its factorization.

97909879380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9432736 (or 9432734 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 69.

The spelling of 97909879380 in words is "ninety-seven billion, nine hundred nine million, eight hundred seventy-nine thousand, three hundred eighty".