7648788878466 has 32 divisors (see below), whose sum is σ = 15528005251200. Its totient is φ = 2511285727104.

The previous prime is 7648788878453. The next prime is 7648788878527. The reversal of 7648788878466 is 6648788878467.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11426241 + ... + 12077108.

It is an arithmetic number, because the mean of its divisors is an integer number (485250164100).

Almost surely, 2^{7648788878466} is an apocalyptic number.

7648788878466 is an abundant number, since it is smaller than the sum of its proper divisors (7879216372734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7648788878466 is a wasteful number, since it uses less digits than its factorization.

7648788878466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23504170.

The product of its digits is 38843449344, while the sum is 87.

Subtracting from 7648788878466 its reverse (6648788878467), we obtain a palindrome (999999999999).

The spelling of 7648788878466 in words is "seven trillion, six hundred forty-eight billion, seven hundred eighty-eight million, eight hundred seventy-eight thousand, four hundred sixty-six".