20855427190926 has 32 divisors (see below), whose sum is σ = 42115331914656. Its totient is φ = 6884714880000.

The previous prime is 20855427190909. The next prime is 20855427190933. The reversal of 20855427190926 is 62909172455802.

It is a self number, because there is not a number n which added to its sum of digits gives 20855427190926.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39580375 + ... + 40103826.

It is an arithmetic number, because the mean of its divisors is an integer number (1316104122333).

Almost surely, 2^{20855427190926} is an apocalyptic number.

20855427190926 is an abundant number, since it is smaller than the sum of its proper divisors (21259904723730).

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

20855427190926 is a wasteful number, since it uses less digits than its factorization.

20855427190926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79684628.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 20855427190926 in words is "twenty trillion, eight hundred fifty-five billion, four hundred twenty-seven million, one hundred ninety thousand, nine hundred twenty-six".