20113842708 has 18 divisors (see below), whose sum is σ = 50843324714. Its totient is φ = 6704614224.

The previous prime is 20113842701. The next prime is 20113842713. The reversal of 20113842708 is 80724831102.

20113842708 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 384 + 270 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11383182864 + 8730659844 = 106692^2 + 93438^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 558717853 = 20113842708 / (2 + 0 + 1 + 1 + 3 + 8 + 4 + 2 + 7 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113842701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279358891 + ... + 279358962.

Almost surely, 2^20113842708 is an apocalyptic number.

It is an amenable number.

20113842708 is an abundant number, since it is smaller than the sum of its proper divisors (30729482006).

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

20113842708 is a wasteful number, since it uses less digits than its factorization.

20113842708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558717863 (or 558717858 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 20113842708 in words is "twenty billion, one hundred thirteen million, eight hundred forty-two thousand, seven hundred eight".