65864715312 has 40 divisors (see below), whose sum is σ = 185618744640. Its totient is φ = 19959004480.

The previous prime is 65864715307. The next prime is 65864715341. The reversal of 65864715312 is 21351746856.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 62371362 + ... + 62372417.

It is an arithmetic number, because the mean of its divisors is an integer number (4640468616).

Almost surely, 2^65864715312 is an apocalyptic number.

It is an amenable number.

65864715312 is an abundant number, since it is smaller than the sum of its proper divisors (119754029328).

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

65864715312 is a wasteful number, since it uses less digits than its factorization.

65864715312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124743801 (or 124743795 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The spelling of 65864715312 in words is "sixty-five billion, eight hundred sixty-four million, seven hundred fifteen thousand, three hundred twelve".