20553016040 has 96 divisors (see below), whose sum is σ = 48139660800. Its totient is φ = 7896096000.

The previous prime is 20553016021. The next prime is 20553016061. The reversal of 20553016040 is 4061035502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4323665 + ... + 4328415.

It is an arithmetic number, because the mean of its divisors is an integer number (501454800).

Almost surely, 2^20553016040 is an apocalyptic number.

20553016040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20553016040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24069830400).

20553016040 is an abundant number, since it is smaller than the sum of its proper divisors (27586644760).

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

20553016040 is a wasteful number, since it uses less digits than its factorization.

20553016040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915 (or 4874 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 20553016040 in words is "twenty billion, five hundred fifty-three million, sixteen thousand, forty".