8681361705856 has 64 divisors (see below), whose sum is σ = 19777980278880. Its totient is φ = 3718253242368.

The previous prime is 8681361705823. The next prime is 8681361705899. The reversal of 8681361705856 is 6585071631868.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1602595 + ... + 4464418.

Almost surely, 2^{8681361705856} is an apocalyptic number.

It is an amenable number.

8681361705856 is an abundant number, since it is smaller than the sum of its proper divisors (11096618573024).

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

8681361705856 is a wasteful number, since it uses less digits than its factorization.

8681361705856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6068631 (or 6068619 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 8681361705856 in words is "eight trillion, six hundred eighty-one billion, three hundred sixty-one million, seven hundred five thousand, eight hundred fifty-six".