7408878390252 has 72 divisors (see below), whose sum is σ = 19737695555760. Its totient is φ = 2336795879040.

The previous prime is 7408878390247. The next prime is 7408878390299. The reversal of 7408878390252 is 2520938788047.

It is a self number, because there is not a number n which added to its sum of digits gives 7408878390252.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6035083 + ... + 7158210.

Almost surely, 2^{7408878390252} is an apocalyptic number.

It is an amenable number.

7408878390252 is an abundant number, since it is smaller than the sum of its proper divisors (12328817165508).

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

7408878390252 is a wasteful number, since it uses less digits than its factorization.

7408878390252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13194143 (or 13194138 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 7408878390252 in words is "seven trillion, four hundred eight billion, eight hundred seventy-eight million, three hundred ninety thousand, two hundred fifty-two".