97744396624 has 80 divisors (see below), whose sum is σ = 218818633600. Its totient is φ = 41429532672.

The previous prime is 97744396609. The next prime is 97744396649. The reversal of 97744396624 is 42669344779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23670592 + ... + 23674720.

It is an arithmetic number, because the mean of its divisors is an integer number (2735232920).

Almost surely, 2^97744396624 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 97744396624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109409316800).

97744396624 is an abundant number, since it is smaller than the sum of its proper divisors (121074236976).

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

97744396624 is a wasteful number, since it uses less digits than its factorization.

97744396624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420 (or 6414 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 61.

The spelling of 97744396624 in words is "ninety-seven billion, seven hundred forty-four million, three hundred ninety-six thousand, six hundred twenty-four".