20469988032 has 112 divisors (see below), whose sum is σ = 58382550240. Its totient is φ = 6292389888.

The previous prime is 20469987961. The next prime is 20469988037. The reversal of 20469988032 is 23088996402.

It is not an unprimeable number, because it can be changed into a prime (20469988037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3064248 + ... + 3070920.

It is an arithmetic number, because the mean of its divisors is an integer number (521272770).

Almost surely, 2^20469988032 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 20469988032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29191275120).

20469988032 is an abundant number, since it is smaller than the sum of its proper divisors (37912562208).

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

20469988032 is a wasteful number, since it uses less digits than its factorization.

20469988032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7930 (or 7920 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 20469988032 in words is "twenty billion, four hundred sixty-nine million, nine hundred eighty-eight thousand, thirty-two".