97908139842 has 32 divisors (see below), whose sum is σ = 196926971904. Its totient is φ = 32451080400.

The previous prime is 97908139801. The next prime is 97908139877. The reversal of 97908139842 is 24893180979.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2809867 + ... + 2844497.

It is an arithmetic number, because the mean of its divisors is an integer number (6153967872).

Almost surely, 2^97908139842 is an apocalyptic number.

97908139842 is an abundant number, since it is smaller than the sum of its proper divisors (99018832062).

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

97908139842 is a wasteful number, since it uses less digits than its factorization.

97908139842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37294.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 97908139842 in words is "ninety-seven billion, nine hundred eight million, one hundred thirty-nine thousand, eight hundred forty-two".