65504423424 has 160 divisors (see below), whose sum is σ = 195017518080. Its totient is φ = 19365478400.

The previous prime is 65504423371. The next prime is 65504423431. The reversal of 65504423424 is 42432440556.

It is a happy number.

It is a super-2 number, since 2×65504423424² (a number of 22 digits) contains 22 as substring.

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, 645457 + ... + 740015.

It is an arithmetic number, because the mean of its divisors is an integer number (1218859488).

Almost surely, 2^65504423424 is an apocalyptic number.

65504423424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65504423424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97508759040).

65504423424 is an abundant number, since it is smaller than the sum of its proper divisors (129513094656).

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

65504423424 is a wasteful number, since it uses less digits than its factorization.

65504423424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94632 (or 94616 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 39.

The spelling of 65504423424 in words is "sixty-five billion, five hundred four million, four hundred twenty-three thousand, four hundred twenty-four".