20881315233120 has 192 divisors, whose sum is σ = 65977545392640. Its totient is φ = 5551306641408.

The previous prime is 20881315233067. The next prime is 20881315233137. The reversal of 20881315233120 is 2133251318802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1682749476 + ... + 1682761884.

It is an arithmetic number, because the mean of its divisors is an integer number (343633048920).

Almost surely, 2^{20881315233120} is an apocalyptic number.

20881315233120 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 20881315233120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32988772696320).

20881315233120 is an abundant number, since it is smaller than the sum of its proper divisors (45096230159520).

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

20881315233120 is a wasteful number, since it uses less digits than its factorization.

20881315233120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22877 (or 22869 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 20881315233120 in words is "twenty trillion, eight hundred eighty-one billion, three hundred fifteen million, two hundred thirty-three thousand, one hundred twenty".