5661123015 has 32 divisors (see below), whose sum is σ = 9202360320. Its totient is φ = 2971328256.

The previous prime is 5661123007. The next prime is 5661123049. The reversal of 5661123015 is 5103211665.

It is not a de Polignac number, because 5661123015 - 2³ = 5661123007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363274 + ... + 378536.

It is an arithmetic number, because the mean of its divisors is an integer number (287573760).

Almost surely, 2^5661123015 is an apocalyptic number.

5661123015 is a deficient number, since it is larger than the sum of its proper divisors (3541237305).

5661123015 is a wasteful number, since it uses less digits than its factorization.

5661123015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15663.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 5661123015 is about 75240.4347076756. The cubic root of 5661123015 is about 1782.2455158832.

The spelling of 5661123015 in words is "five billion, six hundred sixty-one million, one hundred twenty-three thousand, fifteen".