20852803025664 has 432 divisors, whose sum is σ = 58351615308000. Its totient is φ = 6609588387840.

The previous prime is 20852803025629. The next prime is 20852803025741. The reversal of 20852803025664 is 46652030825802.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18803248342 + ... + 18803249450.

Almost surely, 2^{20852803025664} is an apocalyptic number.

20852803025664 is a gapful number since it is divisible by the number (24) 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 20852803025664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29175807654000).

20852803025664 is an abundant number, since it is smaller than the sum of its proper divisors (37498812282336).

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

20852803025664 is a wasteful number, since it uses less digits than its factorization.

20852803025664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 20852803025664 in words is "twenty trillion, eight hundred fifty-two billion, eight hundred three million, twenty-five thousand, six hundred sixty-four".