5615512640 has 28 divisors (see below), whose sum is σ = 13371940236. Its totient is φ = 2246204928.

The previous prime is 5615512627. The next prime is 5615512649. The reversal of 5615512640 is 462155165.

It can be written as a sum of positive squares in 2 ways, for example, as 1479479296 + 4136033344 = 38464^2 + 64312^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5615512640.

It is not an unprimeable number, because it can be changed into a prime (5615512649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8773919 + ... + 8774558.

Almost surely, 2^5615512640 is an apocalyptic number.

It is an amenable number.

5615512640 is an abundant number, since it is smaller than the sum of its proper divisors (7756427596).

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

5615512640 is a wasteful number, since it uses less digits than its factorization.

5615512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17548494 (or 17548484 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 5615512640 is about 74936.7242411890. The cubic root of 5615512640 is about 1777.4462221039.

The spelling of 5615512640 in words is "five billion, six hundred fifteen million, five hundred twelve thousand, six hundred forty".