97980721336 has 16 divisors (see below), whose sum is σ = 184537684800. Its totient is φ = 48770672064.

The previous prime is 97980721271. The next prime is 97980721343. The reversal of 97980721336 is 63312708979.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27459181 + ... + 27462748.

It is an arithmetic number, because the mean of its divisors is an integer number (11533605300).

Almost surely, 2^97980721336 is an apocalyptic number.

It is an amenable number.

97980721336 is a deficient number, since it is larger than the sum of its proper divisors (86556963464).

97980721336 is a wasteful number, since it uses less digits than its factorization.

97980721336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54922158 (or 54922154 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 97980721336 in words is "ninety-seven billion, nine hundred eighty million, seven hundred twenty-one thousand, three hundred thirty-six".