65280738115584 has 150 divisors (see below), whose sum is σ = 195030331238204. Its totient is φ = 21760245596160.

The previous prime is 65280738115517. The next prime is 65280738115603. The reversal of 65280738115584 is 48551183708256.

It is a happy number.

65280738115584 is a `hidden beast` number, since 6 + 5 + 2 + 8 + 0 + 7 + 38 + 1 + 15 + 584 = 666.

It is a super-2 number, since 2×65280738115584² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23268082 + ... + 25922289.

Almost surely, 2^{65280738115584} is an apocalyptic number.

65280738115584 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65280738115584 is an abundant number, since it is smaller than the sum of its proper divisors (129749593122620).

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

65280738115584 is an frugal number, since it uses more digits than its factorization.

65280738115584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49190411 (or 49190376 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

The spelling of 65280738115584 in words is "sixty-five trillion, two hundred eighty billion, seven hundred thirty-eight million, one hundred fifteen thousand, five hundred eighty-four".