20317349908 has 24 divisors (see below), whose sum is σ = 35800327080. Its totient is φ = 10088908800.

The previous prime is 20317349881. The next prime is 20317349947. The reversal of 20317349908 is 80994371302.

It can be written as a sum of positive squares in 4 ways, for example, as 18319081104 + 1998268804 = 135348^2 + 44702^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339660 + ... + 394972.

It is an arithmetic number, because the mean of its divisors is an integer number (1491680295).

Almost surely, 2^20317349908 is an apocalyptic number.

It is an amenable number.

20317349908 is a deficient number, since it is larger than the sum of its proper divisors (15482977172).

20317349908 is a wasteful number, since it uses less digits than its factorization.

20317349908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55947 (or 55945 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 20317349908 in words is "twenty billion, three hundred seventeen million, three hundred forty-nine thousand, nine hundred eight".