97878518552 has 32 divisors (see below), whose sum is σ = 186642548400. Its totient is φ = 48111542784.

The previous prime is 97878518533. The next prime is 97878518561. The reversal of 97878518552 is 25581587879.

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, 93677 + ... + 452252.

Almost surely, 2^97878518552 is an apocalyptic number.

It is an amenable number.

97878518552 is a deficient number, since it is larger than the sum of its proper divisors (88764029848).

97878518552 is a wasteful number, since it uses less digits than its factorization.

97878518552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546315 (or 546311 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 65.

The spelling of 97878518552 in words is "ninety-seven billion, eight hundred seventy-eight million, five hundred eighteen thousand, five hundred fifty-two".