20206191708 has 72 divisors (see below), whose sum is σ = 51450999600. Its totient is φ = 6686171136.

The previous prime is 20206191683. The next prime is 20206191751. The reversal of 20206191708 is 80719160202.

20206191708 is a `hidden beast` number, since 2 + 0 + 20 + 619 + 17 + 0 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4787223 + ... + 4791441.

Almost surely, 2^20206191708 is an apocalyptic number.

It is an amenable number.

20206191708 is an abundant number, since it is smaller than the sum of its proper divisors (31244807892).

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

20206191708 is a wasteful number, since it uses less digits than its factorization.

20206191708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171 (or 5166 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 20206191708 in words is "twenty billion, two hundred six million, one hundred ninety-one thousand, seven hundred eight".