20753099208 has 128 divisors (see below), whose sum is σ = 58204944000. Its totient is φ = 6851070720.

The previous prime is 20753099179. The next prime is 20753099209. The reversal of 20753099208 is 80299035702.

20753099208 is a `hidden beast` number, since 2 + 0 + 7 + 530 + 99 + 20 + 8 = 666.

It is a super-2 number, since 2×20753099208² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20753099209) 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, 20325738 + ... + 20326758.

It is an arithmetic number, because the mean of its divisors is an integer number (454726125).

Almost surely, 2^20753099208 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 20753099208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29102472000).

20753099208 is an abundant number, since it is smaller than the sum of its proper divisors (37451844792).

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

20753099208 is a wasteful number, since it uses less digits than its factorization.

20753099208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1842 counting only the distinct ones).

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

The spelling of 20753099208 in words is "twenty billion, seven hundred fifty-three million, ninety-nine thousand, two hundred eight".