5615249913 has 100 divisors (see below), whose sum is σ = 10543154468. Its totient is φ = 2960556480.

The previous prime is 5615249881. The next prime is 5615249921. The reversal of 5615249913 is 3199425165.

5615249913 is a `hidden beast` number, since 5 + 6 + 152 + 499 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2226612969 + 3388636944 = 47187^2 + 58212^2 .

It is not a de Polignac number, because 5615249913 - 2⁵ = 5615249881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5615249933) by changing a digit.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 2527143 + ... + 2529363.

Almost surely, 2^5615249913 is an apocalyptic number.

It is an amenable number.

5615249913 is a deficient number, since it is larger than the sum of its proper divisors (4927904555).

5615249913 is an equidigital number, since it uses as much as digits as its factorization.

5615249913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274 (or 2244 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 5615249913 is about 74934.9712283924. The cubic root of 5615249913 is about 1777.4185018447.

The spelling of 5615249913 in words is "five billion, six hundred fifteen million, two hundred forty-nine thousand, nine hundred thirteen".