21883785721086 has 32 divisors (see below), whose sum is σ = 45120646978848. Its totient is φ = 7071349109760.

The previous prime is 21883785721073. The next prime is 21883785721111. The reversal of 21883785721086 is 68012758738812.

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, 283268635 + ... + 283345878.

It is an arithmetic number, because the mean of its divisors is an integer number (1410020218089).

Almost surely, 2^{21883785721086} is an apocalyptic number.

21883785721086 is an abundant number, since it is smaller than the sum of its proper divisors (23236861257762).

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

21883785721086 is a wasteful number, since it uses less digits than its factorization.

21883785721086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566614716.

The product of its (nonzero) digits is 72253440, while the sum is 66.

The spelling of 21883785721086 in words is "twenty-one trillion, eight hundred eighty-three billion, seven hundred eighty-five million, seven hundred twenty-one thousand, eighty-six".