97809586956 has 36 divisors (see below), whose sum is σ = 249187690752. Its totient is φ = 32346476064.

The previous prime is 97809586939. The next prime is 97809586961. The reversal of 97809586956 is 65968590879.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10692015 + ... + 10701158.

Almost surely, 2^97809586956 is an apocalyptic number.

It is an amenable number.

97809586956 is an abundant number, since it is smaller than the sum of its proper divisors (151378103796).

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

97809586956 is a wasteful number, since it uses less digits than its factorization.

97809586956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21393310 (or 21393305 counting only the distinct ones).

The product of its (nonzero) digits is 293932800, while the sum is 72.

The spelling of 97809586956 in words is "ninety-seven billion, eight hundred nine million, five hundred eighty-six thousand, nine hundred fifty-six".