20108672806 has 24 divisors (see below), whose sum is σ = 31587824520. Its totient is φ = 9600002016.

The previous prime is 20108672803. The next prime is 20108672809. The reversal of 20108672806 is 60827680102.

It is an interprime number because it is at equal distance from previous prime (20108672803) and next prime (20108672809).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20108672803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585301 + ... + 618703.

It is an arithmetic number, because the mean of its divisors is an integer number (1316159355).

Almost surely, 2^20108672806 is an apocalyptic number.

20108672806 is a deficient number, since it is larger than the sum of its proper divisors (11479151714).

20108672806 is a wasteful number, since it uses less digits than its factorization.

20108672806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34020 (or 33997 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 20108672806 in words is "twenty billion, one hundred eight million, six hundred seventy-two thousand, eight hundred six".