18813513085570 has 32 divisors (see below), whose sum is σ = 38710217145600. Its totient is φ = 6448991829696.

The previous prime is 18813513085567. The next prime is 18813513085571. The reversal of 18813513085570 is 7558031531881.

It is not an unprimeable number, because it can be changed into a prime (18813513085571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27904365 + ... + 28570624.

It is an arithmetic number, because the mean of its divisors is an integer number (1209694285800).

Almost surely, 2^{18813513085570} is an apocalyptic number.

18813513085570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18813513085570 is an abundant number, since it is smaller than the sum of its proper divisors (19896704060030).

18813513085570 is a wasteful number, since it uses less digits than its factorization.

18813513085570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56479762.

The product of its (nonzero) digits is 4032000, while the sum is 55.

The spelling of 18813513085570 in words is "eighteen trillion, eight hundred thirteen billion, five hundred thirteen million, eighty-five thousand, five hundred seventy".