20836801056 has 48 divisors (see below), whose sum is σ = 57074721984. Its totient is φ = 6643617024.

The previous prime is 20836801031. The next prime is 20836801087. The reversal of 20836801056 is 65010863802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4716271 + ... + 4720686.

It is an arithmetic number, because the mean of its divisors is an integer number (1189056708).

Almost surely, 2^20836801056 is an apocalyptic number.

It is an amenable number.

20836801056 is an abundant number, since it is smaller than the sum of its proper divisors (36237920928).

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

20836801056 is a wasteful number, since it uses less digits than its factorization.

20836801056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436993 (or 9436985 counting only the distinct ones).

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

The spelling of 20836801056 in words is "twenty billion, eight hundred thirty-six million, eight hundred one thousand, fifty-six".