97816418856 has 64 divisors (see below), whose sum is σ = 292613227200. Its totient is φ = 30097358784.

The previous prime is 97816418837. The next prime is 97816418857. The reversal of 97816418856 is 65881461879.

97816418856 is a `hidden beast` number, since 97 + 81 + 6 + 418 + 8 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 97816418793 and 97816418802.

It is not an unprimeable number, because it can be changed into a prime (97816418857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17414646 + ... + 17420261.

It is an arithmetic number, because the mean of its divisors is an integer number (4572081675).

Almost surely, 2^97816418856 is an apocalyptic number.

It is an amenable number.

97816418856 is an abundant number, since it is smaller than the sum of its proper divisors (194796808344).

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

97816418856 is a wasteful number, since it uses less digits than its factorization.

97816418856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34834935 (or 34834925 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The spelling of 97816418856 in words is "ninety-seven billion, eight hundred sixteen million, four hundred eighteen thousand, eight hundred fifty-six".