20654036256 has 72 divisors (see below), whose sum is σ = 63068589360. Its totient is φ = 5901151872.

The previous prime is 20654036243. The next prime is 20654036281. The reversal of 20654036256 is 65263045602.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2190666 + ... + 2200073.

It is an arithmetic number, because the mean of its divisors is an integer number (875952630).

Almost surely, 2^20654036256 is an apocalyptic number.

It is an amenable number.

20654036256 is an abundant number, since it is smaller than the sum of its proper divisors (42414553104).

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

20654036256 is a wasteful number, since it uses less digits than its factorization.

20654036256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390766 (or 4390751 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 20654036256 in words is "twenty billion, six hundred fifty-four million, thirty-six thousand, two hundred fifty-six".