97812894972 has 96 divisors (see below), whose sum is σ = 263404657152. Its totient is φ = 28009656576.

The previous prime is 97812894931. The next prime is 97812894997. The reversal of 97812894972 is 27949821879.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235638 + ... + 501149.

It is an arithmetic number, because the mean of its divisors is an integer number (2743798512).

Almost surely, 2^97812894972 is an apocalyptic number.

97812894972 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

97812894972 is an abundant number, since it is smaller than the sum of its proper divisors (165591762180).

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

97812894972 is a wasteful number, since it uses less digits than its factorization.

97812894972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736867 (or 736865 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 66.

The spelling of 97812894972 in words is "ninety-seven billion, eight hundred twelve million, eight hundred ninety-four thousand, nine hundred seventy-two".