5615661507 has 8 divisors (see below), whose sum is σ = 7488009984. Its totient is φ = 3743543688.

The previous prime is 5615661503. The next prime is 5615661521. The reversal of 5615661507 is 7051665165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5615661507 - 2² = 5615661503 is a prime.

It is a super-2 number, since 2×5615661507² = 63071308322403022098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5615661503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10738 + ... + 106520.

It is an arithmetic number, because the mean of its divisors is an integer number (936001248).

Almost surely, 2^5615661507 is an apocalyptic number.

5615661507 is a deficient number, since it is larger than the sum of its proper divisors (1872348477).

5615661507 is a wasteful number, since it uses less digits than its factorization.

5615661507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115329.

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 5615661507 is about 74937.7175192840. The cubic root of 5615661507 is about 1777.4619286395.

The spelling of 5615661507 in words is "five billion, six hundred fifteen million, six hundred sixty-one thousand, five hundred seven".