22166871855 has 16 divisors (see below), whose sum is σ = 35477468640. Its totient is φ = 11818840448.

The previous prime is 22166871847. The next prime is 22166871913. The reversal of 22166871855 is 55817866122.

It is a cyclic number.

It is not a de Polignac number, because 22166871855 - 2³ = 22166871847 is a prime.

It is a super-2 number, since 2×22166871855² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22166871798 and 22166871807.

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, 165300 + ... + 267689.

It is an arithmetic number, because the mean of its divisors is an integer number (2217341790).

Almost surely, 2^22166871855 is an apocalyptic number.

22166871855 is a deficient number, since it is larger than the sum of its proper divisors (13310596785).

22166871855 is a wasteful number, since it uses less digits than its factorization.

22166871855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436410.

The product of its digits is 1612800, while the sum is 51.

The spelling of 22166871855 in words is "twenty-two billion, one hundred sixty-six million, eight hundred seventy-one thousand, eight hundred fifty-five".