65503885464 has 80 divisors (see below), whose sum is σ = 184597420920. Its totient is φ = 21700638720.

The previous prime is 65503885441. The next prime is 65503885493. The reversal of 65503885464 is 46458830556.

65503885464 is a `hidden beast` number, since 6 + 5 + 503 + 88 + 54 + 6 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 65503885464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 204457 + ... + 415704.

Almost surely, 2^65503885464 is an apocalyptic number.

It is an amenable number.

65503885464 is an abundant number, since it is smaller than the sum of its proper divisors (119093535456).

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

65503885464 is a wasteful number, since it uses less digits than its factorization.

65503885464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620342 (or 620329 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 54.

The spelling of 65503885464 in words is "sixty-five billion, five hundred three million, eight hundred eighty-five thousand, four hundred sixty-four".