20507575300 has 72 divisors (see below), whose sum is σ = 45159734592. Its totient is φ = 8082480000.

The previous prime is 20507575259. The next prime is 20507575321. The reversal of 20507575300 is 357570502.

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, 2126289 + ... + 2135911.

It is an arithmetic number, because the mean of its divisors is an integer number (627218536).

Almost surely, 2^20507575300 is an apocalyptic number.

20507575300 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 20507575300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22579867296).

20507575300 is an abundant number, since it is smaller than the sum of its proper divisors (24652159292).

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

20507575300 is a wasteful number, since it uses less digits than its factorization.

20507575300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9949 (or 9942 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 34.

The spelling of 20507575300 in words is "twenty billion, five hundred seven million, five hundred seventy-five thousand, three hundred".