5615615771 has 2 divisors, whose sum is σ = 5615615772. Its totient is φ = 5615615770.

The previous prime is 5615615641. The next prime is 5615615777. The reversal of 5615615771 is 1775165165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5615615771 is a prime.

It is not a weakly prime, because it can be changed into another prime (5615615777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807807885 + 2807807886.

It is an arithmetic number, because the mean of its divisors is an integer number (2807807886).

Almost surely, 2^5615615771 is an apocalyptic number.

5615615771 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615615771 is an equidigital number, since it uses as much as digits as its factorization.

5615615771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220500, while the sum is 44.

The square root of 5615615771 is about 74937.4123585809. The cubic root of 5615615771 is about 1777.4571031932.

The spelling of 5615615771 in words is "five billion, six hundred fifteen million, six hundred fifteen thousand, seven hundred seventy-one".