65444451324 has 48 divisors (see below), whose sum is σ = 174571799808. Its totient is φ = 18692707968.

The previous prime is 65444451307. The next prime is 65444451337. The reversal of 65444451324 is 42315444456.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161904 + ... + 396360.

It is an arithmetic number, because the mean of its divisors is an integer number (3636912496).

Almost surely, 2^65444451324 is an apocalyptic number.

It is an amenable number.

65444451324 is an abundant number, since it is smaller than the sum of its proper divisors (109127348484).

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

65444451324 is a wasteful number, since it uses less digits than its factorization.

65444451324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237794 (or 237792 counting only the distinct ones).

The product of its digits is 921600, while the sum is 42.

The spelling of 65444451324 in words is "sixty-five billion, four hundred forty-four million, four hundred fifty-one thousand, three hundred twenty-four".