6157708991 has 16 divisors (see below), whose sum is σ = 7167348480. Its totient is φ = 5180829120.

The previous prime is 6157708967. The next prime is 6157709023. The reversal of 6157708991 is 1998077516.

It is a cyclic number.

It is not a de Polignac number, because 6157708991 - 2¹⁸ = 6157446847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6157708951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274595 + ... + 296171.

It is an arithmetic number, because the mean of its divisors is an integer number (447959280).

Almost surely, 2^6157708991 is an apocalyptic number.

6157708991 is a deficient number, since it is larger than the sum of its proper divisors (1009639489).

6157708991 is a wasteful number, since it uses less digits than its factorization.

6157708991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334.

The product of its (nonzero) digits is 952560, while the sum is 53.

The square root of 6157708991 is about 78471.0710453222. The cubic root of 6157708991 is about 1832.9040050954.

The spelling of 6157708991 in words is "six billion, one hundred fifty-seven million, seven hundred eight thousand, nine hundred ninety-one".