20158880920920 has 2304 divisors, whose sum is σ = 89168350003200. Its totient is φ = 3908653056000.

The previous prime is 20158880920909. The next prime is 20158880920933. The reversal of 20158880920920 is 2902908885102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 10774387585 + ... + 10774389455.

It is an arithmetic number, because the mean of its divisors is an integer number (38701540800).

Almost surely, 2^{20158880920920} is an apocalyptic number.

20158880920920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20158880920920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44584175001600).

20158880920920 is an abundant number, since it is smaller than the sum of its proper divisors (69009469082280).

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

20158880920920 is a wasteful number, since it uses less digits than its factorization.

20158880920920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 20158880920920 in words is "twenty trillion, one hundred fifty-eight billion, eight hundred eighty million, nine hundred twenty thousand, nine hundred twenty".