615798331680 has 96 divisors (see below), whose sum is σ = 2216874006144. Its totient is φ = 140753903616.

The previous prime is 615798331651. The next prime is 615798331721. The reversal of 615798331680 is 86133897516.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 615798331680.

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, 91633297 + ... + 91640016.

It is an arithmetic number, because the mean of its divisors is an integer number (23092437564).

Almost surely, 2^615798331680 is an apocalyptic number.

615798331680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

615798331680 is an abundant number, since it is smaller than the sum of its proper divisors (1601075674464).

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

615798331680 is a wasteful number, since it uses less digits than its factorization.

615798331680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183273338 (or 183273330 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 615798331680 in words is "six hundred fifteen billion, seven hundred ninety-eight million, three hundred thirty-one thousand, six hundred eighty".