20297593008 has 500 divisors, whose sum is σ = 74890695528. Its totient is φ = 5263211520.

The previous prime is 20297592929. The next prime is 20297593033. The reversal of 20297593008 is 80039579202.

20297593008 is a `hidden beast` number, since 2 + 0 + 297 + 59 + 300 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 34228360 + ... + 34228952.

Almost surely, 2^20297593008 is an apocalyptic number.

20297593008 is a gapful number since it is divisible by the number (28) 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 20297593008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37445347764).

20297593008 is an abundant number, since it is smaller than the sum of its proper divisors (54593102520).

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

20297593008 is an equidigital number, since it uses as much as digits as its factorization.

20297593008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 20297593008 in words is "twenty billion, two hundred ninety-seven million, five hundred ninety-three thousand, eight".