813488686880 has 24 divisors (see below), whose sum is σ = 1921867023132. Its totient is φ = 325395474688.

The previous prime is 813488686859. The next prime is 813488686891. The reversal of 813488686880 is 88686884318.

813488686880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 809344932496 + 4143754384 = 899636^2 + 64372^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 813488686880.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542151987 + ... + 2542152306.

Almost surely, 2^813488686880 is an apocalyptic number.

813488686880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

813488686880 is an abundant number, since it is smaller than the sum of its proper divisors (1108378336252).

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

813488686880 is a wasteful number, since it uses less digits than its factorization.

813488686880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084304308 (or 5084304300 counting only the distinct ones).

The product of its (nonzero) digits is 113246208, while the sum is 68.

The spelling of 813488686880 in words is "eight hundred thirteen billion, four hundred eighty-eight million, six hundred eighty-six thousand, eight hundred eighty".