22540210491 has 4 divisors (see below), whose sum is σ = 30053613992. Its totient is φ = 15026806992.

The previous prime is 22540210487. The next prime is 22540210493. The reversal of 22540210491 is 19401204522.

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

It is not a de Polignac number, because 22540210491 - 2² = 22540210487 is a prime.

It is a super-2 number, since 2×22540210491² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22540210493) 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 3 ways as a sum of consecutive naturals, for example, 3756701746 + ... + 3756701751.

It is an arithmetic number, because the mean of its divisors is an integer number (7513403498).

Almost surely, 2^22540210491 is an apocalyptic number.

22540210491 is a deficient number, since it is larger than the sum of its proper divisors (7513403501).

22540210491 is an equidigital number, since it uses as much as digits as its factorization.

22540210491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513403500.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 22540210491 in words is "twenty-two billion, five hundred forty million, two hundred ten thousand, four hundred ninety-one".