615995560320 has 512 divisors, whose sum is σ = 2383897651200. Its totient is φ = 132075356160.

The previous prime is 615995560291. The next prime is 615995560447. The reversal of 615995560320 is 23065599516.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71052946 + ... + 71061614.

It is an arithmetic number, because the mean of its divisors is an integer number (4656050100).

Almost surely, 2^615995560320 is an apocalyptic number.

615995560320 is a gapful number since it is divisible by the number (60) 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 615995560320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191948825600).

615995560320 is an abundant number, since it is smaller than the sum of its proper divisors (1767902090880).

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

615995560320 is a wasteful number, since it uses less digits than its factorization.

615995560320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9026 (or 9014 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 51.

The spelling of 615995560320 in words is "six hundred fifteen billion, nine hundred ninety-five million, five hundred sixty thousand, three hundred twenty".