18835373220000 has 120 divisors (see below), whose sum is σ = 61783791433056. Its totient is φ = 5022766176000.

The previous prime is 18835373219987. The next prime is 18835373220043. The reversal of 18835373220000 is 2237353881.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 156901444 + ... + 157021443.

Almost surely, 2^{18835373220000} is an apocalyptic number.

18835373220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18835373220000 is an abundant number, since it is smaller than the sum of its proper divisors (42948418213056).

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

18835373220000 is an equidigital number, since it uses as much as digits as its factorization.

18835373220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313922920 (or 313922897 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 18835373220000 in words is "eighteen trillion, eight hundred thirty-five billion, three hundred seventy-three million, two hundred twenty thousand".