97249177820 has 24 divisors (see below), whose sum is σ = 214971867600. Its totient is φ = 36852319872.

The previous prime is 97249177819. The next prime is 97249177891. The reversal of 97249177820 is 2877194279.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127959065 + ... + 127959824.

It is an arithmetic number, because the mean of its divisors is an integer number (8957161150).

Almost surely, 2^97249177820 is an apocalyptic number.

It is an amenable number.

97249177820 is an abundant number, since it is smaller than the sum of its proper divisors (117722689780).

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

97249177820 is a wasteful number, since it uses less digits than its factorization.

97249177820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255918917 (or 255918915 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 97249177820 in words is "ninety-seven billion, two hundred forty-nine million, one hundred seventy-seven thousand, eight hundred twenty".