97709868840 has 32 divisors (see below), whose sum is σ = 293129606880. Its totient is φ = 26055964992.

The previous prime is 97709868829. The next prime is 97709868859. The reversal of 97709868840 is 4886890779.

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, 407124334 + ... + 407124573.

It is an arithmetic number, because the mean of its divisors is an integer number (9160300215).

Almost surely, 2^97709868840 is an apocalyptic number.

It is an amenable number.

97709868840 is an abundant number, since it is smaller than the sum of its proper divisors (195419738040).

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

97709868840 is a wasteful number, since it uses less digits than its factorization.

97709868840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814248921 (or 814248917 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 66.

The spelling of 97709868840 in words is "ninety-seven billion, seven hundred nine million, eight hundred sixty-eight thousand, eight hundred forty".