20855427190910 has 64 divisors (see below), whose sum is σ = 40861786053312. Its totient is φ = 7617801793536.

The previous prime is 20855427190909. The next prime is 20855427190933. The reversal of 20855427190910 is 1909172455802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29064677 + ... + 29773583.

It is an arithmetic number, because the mean of its divisors is an integer number (638465407083).

Almost surely, 2^{20855427190910} is an apocalyptic number.

20855427190910 is a deficient number, since it is larger than the sum of its proper divisors (20006358862402).

20855427190910 is a wasteful number, since it uses less digits than its factorization.

20855427190910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711357.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 20855427190910 in words is "twenty trillion, eight hundred fifty-five billion, four hundred twenty-seven million, one hundred ninety thousand, nine hundred ten".