97861216032 has 72 divisors (see below), whose sum is σ = 279199576656. Its totient is φ = 32514120576.

The previous prime is 97861216021. The next prime is 97861216049. The reversal of 97861216032 is 23061216879.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 464998 + ... + 641829.

It is an arithmetic number, because the mean of its divisors is an integer number (3877771898).

Almost surely, 2^97861216032 is an apocalyptic number.

It is an amenable number.

97861216032 is an abundant number, since it is smaller than the sum of its proper divisors (181338360624).

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

97861216032 is a wasteful number, since it uses less digits than its factorization.

97861216032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107150 (or 1107139 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 97861216032 in words is "ninety-seven billion, eight hundred sixty-one million, two hundred sixteen thousand, thirty-two".