20556462336 has 144 divisors (see below), whose sum is σ = 57815439360. Its totient is φ = 6470830080.

The previous prime is 20556462301. The next prime is 20556462347. The reversal of 20556462336 is 63326465502.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1388091 + ... + 1402821.

Almost surely, 2^20556462336 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 20556462336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28907719680).

20556462336 is an abundant number, since it is smaller than the sum of its proper divisors (37258977024).

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

20556462336 is a wasteful number, since it uses less digits than its factorization.

20556462336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14852 (or 14838 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 20556462336 in words is "twenty billion, five hundred fifty-six million, four hundred sixty-two thousand, three hundred thirty-six".