20068840512 has 336 divisors, whose sum is σ = 68213297152. Its totient is φ = 5520337920.

The previous prime is 20068840447. The next prime is 20068840541. The reversal of 20068840512 is 21504886002.

20068840512 is a `hidden beast` number, since 2 + 0 + 0 + 68 + 84 + 0 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38372283 + ... + 38372805.

Almost surely, 2^20068840512 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 20068840512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34106648576).

20068840512 is an abundant number, since it is smaller than the sum of its proper divisors (48144456640).

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

20068840512 is a wasteful number, since it uses less digits than its factorization.

20068840512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 20068840512 in words is "twenty billion, sixty-eight million, eight hundred forty thousand, five hundred twelve".