5261556915 has 12 divisors (see below), whose sum is σ = 9120032064. Its totient is φ = 2806163664.

The previous prime is 5261556887. The next prime is 5261556947. The reversal of 5261556915 is 5196551625.

5261556915 is a `hidden beast` number, since 5 + 2 + 6 + 1 + 556 + 91 + 5 = 666.

It is not a de Polignac number, because 5261556915 - 2¹⁶ = 5261491379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 116923487 = 5261556915 / (5 + 2 + 6 + 1 + 5 + 5 + 6 + 9 + 1 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58461699 + ... + 58461788.

It is an arithmetic number, because the mean of its divisors is an integer number (760002672).

Almost surely, 2^5261556915 is an apocalyptic number.

5261556915 is a deficient number, since it is larger than the sum of its proper divisors (3858475149).

5261556915 is a wasteful number, since it uses less digits than its factorization.

5261556915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116923498 (or 116923495 counting only the distinct ones).

The product of its digits is 405000, while the sum is 45.

The square root of 5261556915 is about 72536.5901804048. The cubic root of 5261556915 is about 1739.2876939753.

The spelling of 5261556915 in words is "five billion, two hundred sixty-one million, five hundred fifty-six thousand, nine hundred fifteen".