20481662976 has 112 divisors (see below), whose sum is σ = 54798644784. Its totient is φ = 6804209664.

The previous prime is 20481662953. The next prime is 20481663031. The reversal of 20481662976 is 67926618402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8280876 + ... + 8283348.

Almost surely, 2^20481662976 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 20481662976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27399322392).

20481662976 is an abundant number, since it is smaller than the sum of its proper divisors (34316981808).

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

20481662976 is an equidigital number, since it uses as much as digits as its factorization.

20481662976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839 (or 2815 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 20481662976 in words is "twenty billion, four hundred eighty-one million, six hundred sixty-two thousand, nine hundred seventy-six".