65380744464 has 160 divisors (see below), whose sum is σ = 198153984000. Its totient is φ = 18186163200.

The previous prime is 65380744459. The next prime is 65380744487. The reversal of 65380744464 is 46444708356.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6869469 + ... + 6878979.

It is an arithmetic number, because the mean of its divisors is an integer number (1238462400).

Almost surely, 2^65380744464 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 65380744464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99076992000).

65380744464 is an abundant number, since it is smaller than the sum of its proper divisors (132773239536).

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

65380744464 is a wasteful number, since it uses less digits than its factorization.

65380744464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10069 (or 10063 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 51.

The spelling of 65380744464 in words is "sixty-five billion, three hundred eighty million, seven hundred forty-four thousand, four hundred sixty-four".