20880666868152 has 512 divisors, whose sum is σ = 72149102161920. Its totient is φ = 4876412682240.

The previous prime is 20880666868147. The next prime is 20880666868153. The reversal of 20880666868152 is 25186866608802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880666868153) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 51890158 + ... + 52291010.

It is an arithmetic number, because the mean of its divisors is an integer number (140916215160).

Almost surely, 2^{20880666868152} 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 20880666868152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36074551080960).

20880666868152 is an abundant number, since it is smaller than the sum of its proper divisors (51268435293768).

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

20880666868152 is a wasteful number, since it uses less digits than its factorization.

20880666868152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400983 (or 400979 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 66.

The spelling of 20880666868152 in words is "twenty trillion, eight hundred eighty billion, six hundred sixty-six million, eight hundred sixty-eight thousand, one hundred fifty-two".