6117122591 has 2 divisors, whose sum is σ = 6117122592. Its totient is φ = 6117122590.

The previous prime is 6117122581. The next prime is 6117122611. The reversal of 6117122591 is 1952217116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6117122591 - 2¹⁸ = 6116860447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6117122581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3058561295 + 3058561296.

It is an arithmetic number, because the mean of its divisors is an integer number (3058561296).

Almost surely, 2^6117122591 is an apocalyptic number.

6117122591 is a deficient number, since it is larger than the sum of its proper divisors (1).

6117122591 is an equidigital number, since it uses as much as digits as its factorization.

6117122591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 35.

The square root of 6117122591 is about 78212.0361005900. The cubic root of 6117122591 is about 1828.8681416976.

The spelling of 6117122591 in words is "six billion, one hundred seventeen million, one hundred twenty-two thousand, five hundred ninety-one".