7648788878465 has 16 divisors (see below), whose sum is σ = 10496295228672. Its totient is φ = 5241619990464.

The previous prime is 7648788878453. The next prime is 7648788878527. The reversal of 7648788878465 is 5648788878467.

It is a cyclic number.

It is not a de Polignac number, because 7648788878465 - 2⁴ = 7648788878449 is a prime.

It is a Duffinian number.

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, 67939034 + ... + 68051523.

It is an arithmetic number, because the mean of its divisors is an integer number (656018451792).

Almost surely, 2^{7648788878465} is an apocalyptic number.

It is an amenable number.

7648788878465 is a deficient number, since it is larger than the sum of its proper divisors (2847506350207).

7648788878465 is a wasteful number, since it uses less digits than its factorization.

7648788878465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135992176.

The product of its digits is 32369541120, while the sum is 86.

The spelling of 7648788878465 in words is "seven trillion, six hundred forty-eight billion, seven hundred eighty-eight million, eight hundred seventy-eight thousand, four hundred sixty-five".