20918025286 has 16 divisors (see below), whose sum is σ = 31534671168. Its totient is φ = 10406598400.

The previous prime is 20918025277. The next prime is 20918025391. The reversal of 20918025286 is 68252081902.

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, 293331 + ... + 357601.

It is an arithmetic number, because the mean of its divisors is an integer number (1970916948).

Almost surely, 2^20918025286 is an apocalyptic number.

20918025286 is a deficient number, since it is larger than the sum of its proper divisors (10616645882).

20918025286 is a wasteful number, since it uses less digits than its factorization.

20918025286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65087.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 20918025286 in words is "twenty billion, nine hundred eighteen million, twenty-five thousand, two hundred eighty-six".