5157991791 has 40 divisors (see below), whose sum is σ = 7764453840. Its totient is φ = 3412326528.

The previous prime is 5157991759. The next prime is 5157991801. The reversal of 5157991791 is 1971997515.

5157991791 is a `hidden beast` number, since 51 + 579 + 9 + 17 + 9 + 1 = 666.

It is not a de Polignac number, because 5157991791 - 2⁵ = 5157991759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5157991721) 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 in 39 ways as a sum of consecutive naturals, for example, 9862056 + ... + 9862578.

It is an arithmetic number, because the mean of its divisors is an integer number (194111346).

Almost surely, 2^5157991791 is an apocalyptic number.

5157991791 is a deficient number, since it is larger than the sum of its proper divisors (2606462049).

5157991791 is a wasteful number, since it uses less digits than its factorization.

5157991791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1228 counting only the distinct ones).

The product of its digits is 893025, while the sum is 54.

The square root of 5157991791 is about 71819.1603334375. The cubic root of 5157991791 is about 1727.8003151056.

The spelling of 5157991791 in words is "five billion, one hundred fifty-seven million, nine hundred ninety-one thousand, seven hundred ninety-one".