22106052591 has 16 divisors (see below), whose sum is σ = 33687940608. Its totient is φ = 12631082400.

The previous prime is 22106052587. The next prime is 22106052613. The reversal of 22106052591 is 19525060122.

It is not a de Polignac number, because 22106052591 - 2² = 22106052587 is a prime.

It is a super-2 number, since 2×22106052591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22106052541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 325606 + ... + 387596.

It is an arithmetic number, because the mean of its divisors is an integer number (2105496288).

Almost surely, 2^22106052591 is an apocalyptic number.

22106052591 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22106052591 is a deficient number, since it is larger than the sum of its proper divisors (11581888017).

22106052591 is a wasteful number, since it uses less digits than its factorization.

22106052591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78982.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 22106052591 in words is "twenty-two billion, one hundred six million, fifty-two thousand, five hundred ninety-one".