20903932416 has 160 divisors (see below), whose sum is σ = 56426388480. Its totient is φ = 6876532736.

The previous prime is 20903932391. The next prime is 20903932433. The reversal of 20903932416 is 61423930902.

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, 58228045 + ... + 58228403.

It is an arithmetic number, because the mean of its divisors is an integer number (352664928).

Almost surely, 2^20903932416 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 20903932416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28213194240).

20903932416 is an abundant number, since it is smaller than the sum of its proper divisors (35522456064).

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

20903932416 is a wasteful number, since it uses less digits than its factorization.

20903932416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 20903932416 in words is "twenty billion, nine hundred three million, nine hundred thirty-two thousand, four hundred sixteen".