20013331193604 has 576 divisors, whose sum is σ = 64766438696960. Its totient is φ = 5290631676288.

The previous prime is 20013331193593. The next prime is 20013331193629. The reversal of 20013331193604 is 40639113331002.

It is a happy number.

20013331193604 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 3 + 3 + 31 + 19 + 3 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2006746362 + ... + 2006756334.

Almost surely, 2^{20013331193604} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20013331193604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32383219348480).

20013331193604 is an abundant number, since it is smaller than the sum of its proper divisors (44753107503356).

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

20013331193604 is an equidigital number, since it uses as much as digits as its factorization.

20013331193604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099 (or 10047 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The spelling of 20013331193604 in words is "twenty trillion, thirteen billion, three hundred thirty-one million, one hundred ninety-three thousand, six hundred four".