5015560661 has 4 divisors (see below), whose sum is σ = 5015704524. Its totient is φ = 5015416800.

The previous prime is 5015560657. The next prime is 5015560681. The reversal of 5015560661 is 1660655105.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 142683025 + 4872877636 = 11945^2 + 69806^2 .

It is a cyclic number.

It is not a de Polignac number, because 5015560661 - 2² = 5015560657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5015560631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17081 + ... + 101601.

It is an arithmetic number, because the mean of its divisors is an integer number (1253926131).

Almost surely, 2^5015560661 is an apocalyptic number.

It is an amenable number.

5015560661 is a deficient number, since it is larger than the sum of its proper divisors (143863).

5015560661 is an equidigital number, since it uses as much as digits as its factorization.

5015560661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143862.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 5015560661 is about 70820.6231333783. The cubic root of 5015560661 is about 1711.7480000595.

The spelling of 5015560661 in words is "five billion, fifteen million, five hundred sixty thousand, six hundred sixty-one".