22105897918 has 32 divisors (see below), whose sum is σ = 36958017600. Its totient is φ = 9846337536.

The previous prime is 22105897837. The next prime is 22105897921. The reversal of 22105897918 is 81979850122.

It is a super-2 number, since 2×22105897918² (a number of 21 digits) contains 22 as substring.

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, 2022055 + ... + 2032957.

It is an arithmetic number, because the mean of its divisors is an integer number (1154938050).

Almost surely, 2^22105897918 is an apocalyptic number.

22105897918 is a deficient number, since it is larger than the sum of its proper divisors (14852119682).

22105897918 is a wasteful number, since it uses less digits than its factorization.

22105897918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 22105897918 in words is "twenty-two billion, one hundred five million, eight hundred ninety-seven thousand, nine hundred eighteen".