7878795751 has 4 divisors (see below), whose sum is σ = 8221352112. Its totient is φ = 7536239392.

The previous prime is 7878795713. The next prime is 7878795767. The reversal of 7878795751 is 1575978787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7878795751 - 2²³ = 7870407143 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 (7878795451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171278146 + ... + 171278191.

It is an arithmetic number, because the mean of its divisors is an integer number (2055338028).

Almost surely, 2^7878795751 is an apocalyptic number.

7878795751 is a deficient number, since it is larger than the sum of its proper divisors (342556361).

7878795751 is a wasteful number, since it uses less digits than its factorization.

7878795751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342556360.

The product of its digits is 34574400, while the sum is 64.

The square root of 7878795751 is about 88762.5808040753. The cubic root of 7878795751 is about 1989.8482036179.

The spelling of 7878795751 in words is "seven billion, eight hundred seventy-eight million, seven hundred ninety-five thousand, seven hundred fifty-one".