20572990480 has 40 divisors (see below), whose sum is σ = 54665376192. Its totient is φ = 7053596544.

The previous prime is 20572990469. The next prime is 20572990513. The reversal of 20572990480 is 8409927502.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 20572990480.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18368182 + ... + 18369301.

Almost surely, 2^20572990480 is an apocalyptic number.

20572990480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20572990480 is an abundant number, since it is smaller than the sum of its proper divisors (34092385712).

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

20572990480 is a wasteful number, since it uses less digits than its factorization.

20572990480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36737503 (or 36737497 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 20572990480 in words is "twenty billion, five hundred seventy-two million, nine hundred ninety thousand, four hundred eighty".