97640964944 has 20 divisors (see below), whose sum is σ = 191458641696. Its totient is φ = 48232283232.

The previous prime is 97640964943. The next prime is 97640964959. The reversal of 97640964944 is 44946904679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97640964943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36761084 + ... + 36763739.

Almost surely, 2^97640964944 is an apocalyptic number.

It is an amenable number.

97640964944 is a deficient number, since it is larger than the sum of its proper divisors (93817676752).

97640964944 is a wasteful number, since it uses less digits than its factorization.

97640964944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73524914 (or 73524908 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 62.

The spelling of 97640964944 in words is "ninety-seven billion, six hundred forty million, nine hundred sixty-four thousand, nine hundred forty-four".