65897409612 has 24 divisors (see below), whose sum is σ = 153771142896. Its totient is φ = 21964300288.

The previous prime is 65897409577. The next prime is 65897409667. The reversal of 65897409612 is 21690479856.

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, 2548 + ... + 363044.

It is an arithmetic number, because the mean of its divisors is an integer number (6407130954).

Almost surely, 2^65897409612 is an apocalyptic number.

It is an amenable number.

65897409612 is an abundant number, since it is smaller than the sum of its proper divisors (87873733284).

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

65897409612 is a wasteful number, since it uses less digits than its factorization.

65897409612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375737 (or 375735 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 65897409612 in words is "sixty-five billion, eight hundred ninety-seven million, four hundred nine thousand, six hundred twelve".