6116721599 has 2 divisors, whose sum is σ = 6116721600. Its totient is φ = 6116721598.

The previous prime is 6116721521. The next prime is 6116721607. The reversal of 6116721599 is 9951276116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6116721599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6116021599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3058360799 + 3058360800.

It is an arithmetic number, because the mean of its divisors is an integer number (3058360800).

Almost surely, 2^6116721599 is an apocalyptic number.

6116721599 is a deficient number, since it is larger than the sum of its proper divisors (1).

6116721599 is an equidigital number, since it uses as much as digits as its factorization.

6116721599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 47.

The square root of 6116721599 is about 78209.4725656682. The cubic root of 6116721599 is about 1828.8281785991.

The spelling of 6116721599 in words is "six billion, one hundred sixteen million, seven hundred twenty-one thousand, five hundred ninety-nine".