3115661544 has 64 divisors (see below), whose sum is σ = 8707809600. Its totient is φ = 1032170688.

The previous prime is 3115661533. The next prime is 3115661569. The reversal of 3115661544 is 4451665113.

3115661544 is a `hidden beast` number, since 3 + 1 + 1 + 56 + 61 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3115661499 and 3115661508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9039 + ... + 79454.

It is an arithmetic number, because the mean of its divisors is an integer number (136059525).

Almost surely, 2^3115661544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3115661544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4353904800).

3115661544 is an abundant number, since it is smaller than the sum of its proper divisors (5592148056).

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

3115661544 is a wasteful number, since it uses less digits than its factorization.

3115661544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88671 (or 88661 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 3115661544 is about 55818.1112543232. Note that the first 3 decimals coincide. The cubic root of 3115661544 is about 1460.5511061406.

The spelling of 3115661544 in words is "three billion, one hundred fifteen million, six hundred sixty-one thousand, five hundred forty-four".