97397533857 has 16 divisors (see below), whose sum is σ = 141424254720. Its totient is φ = 59263492992.

The previous prime is 97397533843. The next prime is 97397533903. The reversal of 97397533857 is 75833579379.

It is not a de Polignac number, because 97397533857 - 2⁴ = 97397533841 is a prime.

It is a super-2 number, since 2×97397533857² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97397533657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14026713 + ... + 14033654.

It is an arithmetic number, because the mean of its divisors is an integer number (8839015920).

Almost surely, 2^97397533857 is an apocalyptic number.

It is an amenable number.

97397533857 is a deficient number, since it is larger than the sum of its proper divisors (44026720863).

97397533857 is a wasteful number, since it uses less digits than its factorization.

97397533857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28060472.

The product of its digits is 150028200, while the sum is 66.

The spelling of 97397533857 in words is "ninety-seven billion, three hundred ninety-seven million, five hundred thirty-three thousand, eight hundred fifty-seven".