97812875808 has 90 divisors (see below), whose sum is σ = 287711786439. Its totient is φ = 32598984384.

The previous prime is 97812875779. The next prime is 97812875821. The reversal of 97812875808 is 80857821879.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 48906437904 + 48906437904 = 221148^2 + 221148^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=221148.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 15919585 + ... + 15925727.

Almost surely, 2^97812875808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97812875808

97812875808 is an abundant number, since it is smaller than the sum of its proper divisors (189898910631).

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

97812875808 is an frugal number, since it uses more digits than its factorization.

97812875808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12308 (or 6148 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 63.

The spelling of 97812875808 in words is "ninety-seven billion, eight hundred twelve million, eight hundred seventy-five thousand, eight hundred eight".