7797278747 has 2 divisors, whose sum is σ = 7797278748. Its totient is φ = 7797278746.

The previous prime is 7797278707. The next prime is 7797278821. The reversal of 7797278747 is 7478727977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7797278747 - 2⁸ = 7797278491 is a prime.

It is not a weakly prime, because it can be changed into another prime (7797278707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3898639373 + 3898639374.

It is an arithmetic number, because the mean of its divisors is an integer number (3898639374).

Almost surely, 2^7797278747 is an apocalyptic number.

7797278747 is a deficient number, since it is larger than the sum of its proper divisors (1).

7797278747 is an equidigital number, since it uses as much as digits as its factorization.

7797278747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67765824, while the sum is 65.

The square root of 7797278747 is about 88302.2012579528. The cubic root of 7797278747 is about 1982.9618247226.

The spelling of 7797278747 in words is "seven billion, seven hundred ninety-seven million, two hundred seventy-eight thousand, seven hundred forty-seven".