915749721483632 has 80 divisors (see below), whose sum is σ = 2046749732966400. Its totient is φ = 388795472536320.

The previous prime is 915749721483563. The next prime is 915749721483689. The reversal of 915749721483632 is 236384127947519.

It is a super-2 number, since 2×915749721483632² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56622032 + ... + 70975727.

It is an arithmetic number, because the mean of its divisors is an integer number (25584371662080).

Almost surely, 2^{915749721483632} is an apocalyptic number.

It is an amenable number.

915749721483632 is an abundant number, since it is smaller than the sum of its proper divisors (1131000011482768).

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

915749721483632 is a wasteful number, since it uses less digits than its factorization.

915749721483632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127598374 (or 127598368 counting only the distinct ones).

The product of its digits is 548674560, while the sum is 71.

The spelling of 915749721483632 in words is "nine hundred fifteen trillion, seven hundred forty-nine billion, seven hundred twenty-one million, four hundred eighty-three thousand, six hundred thirty-two".