5615879917 has 2 divisors, whose sum is σ = 5615879918. Its totient is φ = 5615879916.

The previous prime is 5615879911. The next prime is 5615879933. The reversal of 5615879917 is 7199785165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5236837956 + 379041961 = 72366^2 + 19469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5615879917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5615879911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807939958 + 2807939959.

It is an arithmetic number, because the mean of its divisors is an integer number (2807939959).

Almost surely, 2^5615879917 is an apocalyptic number.

It is an amenable number.

5615879917 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615879917 is an equidigital number, since it uses as much as digits as its factorization.

5615879917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 58.

The square root of 5615879917 is about 74939.1747819523. The cubic root of 5615879917 is about 1777.4849719578.

The spelling of 5615879917 in words is "five billion, six hundred fifteen million, eight hundred seventy-nine thousand, nine hundred seventeen".