97522639872 has 176 divisors, whose sum is σ = 297365102592. Its totient is φ = 27835637760.

The previous prime is 97522639859. The next prime is 97522639873. The reversal of 97522639872 is 27893622579.

It is not an unprimeable number, because it can be changed into a prime (97522639873) 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, 31630843 + ... + 31633925.

Almost surely, 2^97522639872 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 97522639872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148682551296).

97522639872 is an abundant number, since it is smaller than the sum of its proper divisors (199842462720).

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

97522639872 is a wasteful number, since it uses less digits than its factorization.

97522639872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584 (or 4566 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 60.

The spelling of 97522639872 in words is "ninety-seven billion, five hundred twenty-two million, six hundred thirty-nine thousand, eight hundred seventy-two".