5091771813 has 8 divisors (see below), whose sum is σ = 7188383808. Its totient is φ = 3194837184.

The previous prime is 5091771767. The next prime is 5091771823. The reversal of 5091771813 is 3181771905.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5091771813 - 2⁶ = 5091771749 is a prime.

It is a super-2 number, since 2×5091771813² = 51852280391322613938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5091771823) 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 7 ways as a sum of consecutive naturals, for example, 49919281 + ... + 49919382.

It is an arithmetic number, because the mean of its divisors is an integer number (898547976).

Almost surely, 2^5091771813 is an apocalyptic number.

It is an amenable number.

5091771813 is a deficient number, since it is larger than the sum of its proper divisors (2096611995).

5091771813 is a wasteful number, since it uses less digits than its factorization.

5091771813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99838683.

The product of its (nonzero) digits is 52920, while the sum is 42.

The square root of 5091771813 is about 71356.6521986563. The cubic root of 5091771813 is about 1720.3744241875.

The spelling of 5091771813 in words is "five billion, ninety-one million, seven hundred seventy-one thousand, eight hundred thirteen".