97031590656 has 1296 divisors, whose sum is σ = 378660320640. Its totient is φ = 21737963520.

The previous prime is 97031590633. The next prime is 97031590673. The reversal of 97031590656 is 65609513079.

It is a junction number, because it is equal to n+sod(n) for n = 97031590599 and 97031590608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1329199836 + ... + 1329199908.

Almost surely, 2^97031590656 is an apocalyptic number.

97031590656 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97031590656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189330160320).

97031590656 is an abundant number, since it is smaller than the sum of its proper divisors (281628729984).

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

97031590656 is a wasteful number, since it uses less digits than its factorization.

97031590656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 51.

The spelling of 97031590656 in words is "ninety-seven billion, thirty-one million, five hundred ninety thousand, six hundred fifty-six".