20908183873 has 12 divisors (see below), whose sum is σ = 22523268672. Its totient is φ = 19401112640.

The previous prime is 20908183847. The next prime is 20908183913. The reversal of 20908183873 is 37838180902.

It is not a de Polignac number, because 20908183873 - 2⁵ = 20908183841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20908181873) 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, 488965 + ... + 530002.

It is an arithmetic number, because the mean of its divisors is an integer number (1876939056).

Almost surely, 2^20908183873 is an apocalyptic number.

It is an amenable number.

20908183873 is a deficient number, since it is larger than the sum of its proper divisors (1615084799).

20908183873 is a wasteful number, since it uses less digits than its factorization.

20908183873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019072 (or 1019055 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 20908183873 in words is "twenty billion, nine hundred eight million, one hundred eighty-three thousand, eight hundred seventy-three".