20486255208 has 32 divisors (see below), whose sum is σ = 51219790560. Its totient is φ = 6828198080.

The previous prime is 20486255173. The next prime is 20486255213. The reversal of 20486255208 is 80255268402.

It is a self number, because there is not a number n which added to its sum of digits gives 20486255208.

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, 358891 + ... + 412037.

It is an arithmetic number, because the mean of its divisors is an integer number (1600618455).

Almost surely, 2^20486255208 is an apocalyptic number.

It is an amenable number.

20486255208 is an abundant number, since it is smaller than the sum of its proper divisors (30733535352).

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

20486255208 is a wasteful number, since it uses less digits than its factorization.

20486255208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69217 (or 69213 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The spelling of 20486255208 in words is "twenty billion, four hundred eighty-six million, two hundred fifty-five thousand, two hundred eight".