5110781391 has 6 divisors (see below), whose sum is σ = 7382239800. Its totient is φ = 3407187588.

The previous prime is 5110781387. The next prime is 5110781393. The reversal of 5110781391 is 1931870115.

5110781391 is a `hidden beast` number, since 511 + 0 + 7 + 8 + 139 + 1 = 666.

It is not a de Polignac number, because 5110781391 - 2² = 5110781387 is a prime.

It is a super-2 number, since 2×5110781391² = 52240172853183789762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5110781393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283932291 + ... + 283932308.

It is an arithmetic number, because the mean of its divisors is an integer number (1230373300).

Almost surely, 2^5110781391 is an apocalyptic number.

5110781391 is a deficient number, since it is larger than the sum of its proper divisors (2271458409).

5110781391 is a wasteful number, since it uses less digits than its factorization.

5110781391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567864605 (or 567864602 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 36.

The square root of 5110781391 is about 71489.7292693153. The cubic root of 5110781391 is about 1722.5127091677.

The spelling of 5110781391 in words is "five billion, one hundred ten million, seven hundred eighty-one thousand, three hundred ninety-one".