8365387720804 has 81 divisors (see below), whose sum is σ = 15088115863737. Its totient is φ = 4058287446528.

The previous prime is 8365387720793. The next prime is 8365387720843. The reversal of 8365387720804 is 4080277835638.

The square root of 8365387720804 is 2892298.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2026836268900 + 6338551451904 = 1423670^2 + 2517648^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 43343977732 + ... + 43343977924.

Almost surely, 2^{8365387720804} is an apocalyptic number.

8365387720804 is the 2892298-th square number.

It is an amenable number.

8365387720804 is a deficient number, since it is larger than the sum of its proper divisors (6722728142933).

8365387720804 is an equidigital number, since it uses as much as digits as its factorization.

8365387720804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 61.

The spelling of 8365387720804 in words is "eight trillion, three hundred sixty-five billion, three hundred eighty-seven million, seven hundred twenty thousand, eight hundred four".