97671997280 has 96 divisors (see below), whose sum is σ = 271091082528. Its totient is φ = 32784998400.

The previous prime is 97671997261. The next prime is 97671997309. The reversal of 97671997280 is 8279917679.

It is a Harshad number since it is a multiple of its sum of digits (65).

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, 2111561 + ... + 2157320.

It is an arithmetic number, because the mean of its divisors is an integer number (2823865443).

Almost surely, 2^97671997280 is an apocalyptic number.

It is an amenable number.

97671997280 is an abundant number, since it is smaller than the sum of its proper divisors (173419085248).

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

97671997280 is a wasteful number, since it uses less digits than its factorization.

97671997280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268920 (or 4268912 counting only the distinct ones).

The product of its (nonzero) digits is 24004512, while the sum is 65.

The spelling of 97671997280 in words is "ninety-seven billion, six hundred seventy-one million, nine hundred ninety-seven thousand, two hundred eighty".