7920788877 has 24 divisors (see below), whose sum is σ = 11897348736. Its totient is φ = 5266078272.

The previous prime is 7920788857. The next prime is 7920788917. The reversal of 7920788877 is 7788870297.

It is not a de Polignac number, because 7920788877 - 2²⁶ = 7853680013 is a prime.

It is a super-2 number, since 2×7920788877² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920788807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44773 + ... + 133589.

It is an arithmetic number, because the mean of its divisors is an integer number (495722864).

Almost surely, 2^7920788877 is an apocalyptic number.

It is an amenable number.

7920788877 is a deficient number, since it is larger than the sum of its proper divisors (3976559859).

7920788877 is an equidigital number, since it uses as much as digits as its factorization.

7920788877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89199 (or 89187 counting only the distinct ones).

The product of its (nonzero) digits is 22127616, while the sum is 63.

The square root of 7920788877 is about 88998.8139078269. The cubic root of 7920788877 is about 1993.3771663279.

The spelling of 7920788877 in words is "seven billion, nine hundred twenty million, seven hundred eighty-eight thousand, eight hundred seventy-seven".