65931412968 has 128 divisors (see below), whose sum is σ = 185923584000. Its totient is φ = 21645973440.

The previous prime is 65931412957. The next prime is 65931412969. The reversal of 65931412968 is 86921413956.

65931412968 is a `hidden beast` number, since 6 + 593 + 1 + 41 + 2 + 9 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (65931412969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3804403 + ... + 3821693.

It is an arithmetic number, because the mean of its divisors is an integer number (1452528000).

Almost surely, 2^65931412968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65931412968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92961792000).

65931412968 is an abundant number, since it is smaller than the sum of its proper divisors (119992171032).

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

65931412968 is a wasteful number, since it uses less digits than its factorization.

65931412968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17572 (or 17562 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 65931412968 in words is "sixty-five billion, nine hundred thirty-one million, four hundred twelve thousand, nine hundred sixty-eight".