22540213443 has 16 divisors (see below), whose sum is σ = 32850201600. Its totient is φ = 13633886880.

The previous prime is 22540213393. The next prime is 22540213447. The reversal of 22540213443 is 34431204522.

It is not a de Polignac number, because 22540213443 - 2⁶ = 22540213379 is a prime.

It is a super-2 number, since 2×22540213443² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22540213443.

It is not an unprimeable number, because it can be changed into a prime (22540213447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654163 + ... + 687756.

It is an arithmetic number, because the mean of its divisors is an integer number (2053137600).

Almost surely, 2^22540213443 is an apocalyptic number.

22540213443 is a deficient number, since it is larger than the sum of its proper divisors (10309988157).

22540213443 is a wasteful number, since it uses less digits than its factorization.

22540213443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342442.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 22540213443 its reverse (34431204522), we get a palindrome (56971417965).

The spelling of 22540213443 in words is "twenty-two billion, five hundred forty million, two hundred thirteen thousand, four hundred forty-three".