20476883840 has 256 divisors, whose sum is σ = 58065776640. Its totient is φ = 6757171200.

The previous prime is 20476883827. The next prime is 20476883849. The reversal of 20476883840 is 4838867402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20476883849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39302780 + ... + 39303300.

It is an arithmetic number, because the mean of its divisors is an integer number (226819440).

Almost surely, 2^20476883840 is an apocalyptic number.

20476883840 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 20476883840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29032888320).

20476883840 is an abundant number, since it is smaller than the sum of its proper divisors (37588892800).

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

20476883840 is a wasteful number, since it uses less digits than its factorization.

20476883840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 20476883840 in words is "twenty billion, four hundred seventy-six million, eight hundred eighty-three thousand, eight hundred forty".