2515565668 has 48 divisors (see below), whose sum is σ = 5492358144. Its totient is φ = 979403040.

The previous prime is 2515565653. The next prime is 2515565681. The reversal of 2515565668 is 8665655152.

2515565668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 818671 + ... + 821737.

It is an arithmetic number, because the mean of its divisors is an integer number (114424128).

Almost surely, 2^2515565668 is an apocalyptic number.

2515565668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2515565668 is an abundant number, since it is smaller than the sum of its proper divisors (2976792476).

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

2515565668 is a wasteful number, since it uses less digits than its factorization.

2515565668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752 (or 5750 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 49.

The square root of 2515565668 is about 50155.4151413384. The cubic root of 2515565668 is about 1360.0197639861.

The spelling of 2515565668 in words is "two billion, five hundred fifteen million, five hundred sixty-five thousand, six hundred sixty-eight".