97979511672 has 48 divisors (see below), whose sum is σ = 303269918640. Its totient is φ = 27994146048.

The previous prime is 97979511659. The next prime is 97979511677. The reversal of 97979511672 is 27611597979.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97979511677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97201393 + ... + 97202400.

It is an arithmetic number, because the mean of its divisors is an integer number (6318123305).

Almost surely, 2^97979511672 is an apocalyptic number.

It is an amenable number.

97979511672 is an abundant number, since it is smaller than the sum of its proper divisors (205290406968).

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

97979511672 is a wasteful number, since it uses less digits than its factorization.

97979511672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194403812 (or 194403805 counting only the distinct ones).

The product of its digits is 15002820, while the sum is 63.

The spelling of 97979511672 in words is "ninety-seven billion, nine hundred seventy-nine million, five hundred eleven thousand, six hundred seventy-two".