22540626431 has 4 divisors (see below), whose sum is σ = 22540969200. Its totient is φ = 22540283664.

The previous prime is 22540626397. The next prime is 22540626461. The reversal of 22540626431 is 13462604522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22540626431 is a prime.

It is a super-2 number, since 2×22540626431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22540626391 and 22540626400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540626461) 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 3 ways as a sum of consecutive naturals, for example, 38291 + ... + 215748.

It is an arithmetic number, because the mean of its divisors is an integer number (5635242300).

Almost surely, 2^22540626431 is an apocalyptic number.

22540626431 is a deficient number, since it is larger than the sum of its proper divisors (342769).

22540626431 is an equidigital number, since it uses as much as digits as its factorization.

22540626431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342768.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 22540626431 in words is "twenty-two billion, five hundred forty million, six hundred twenty-six thousand, four hundred thirty-one".