20213111826 has 48 divisors (see below), whose sum is σ = 46556179488. Its totient is φ = 6316080000.

The previous prime is 20213111819. The next prime is 20213111987. The reversal of 20213111826 is 62811131202.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20213111826.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54780 + ... + 208391.

It is an arithmetic number, because the mean of its divisors is an integer number (969920406).

Almost surely, 2^20213111826 is an apocalyptic number.

20213111826 is an abundant number, since it is smaller than the sum of its proper divisors (26343067662).

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

20213111826 is a wasteful number, since it uses less digits than its factorization.

20213111826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263447 (or 263444 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 20213111826 in words is "twenty billion, two hundred thirteen million, one hundred eleven thousand, eight hundred twenty-six".