22481737691 has 4 divisors (see below), whose sum is σ = 25693414512. Its totient is φ = 19270060872.

The previous prime is 22481737661. The next prime is 22481737717. The reversal of 22481737691 is 19673718422.

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

It is a cyclic number.

It is not a de Polignac number, because 22481737691 - 2¹⁴ = 22481721307 is a prime.

It is a super-2 number, since 2×22481737691² (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 (22481737661) 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, 1605838400 + ... + 1605838413.

It is an arithmetic number, because the mean of its divisors is an integer number (6423353628).

Almost surely, 2^22481737691 is an apocalyptic number.

22481737691 is a deficient number, since it is larger than the sum of its proper divisors (3211676821).

22481737691 is an equidigital number, since it uses as much as digits as its factorization.

22481737691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211676820.

The product of its digits is 1016064, while the sum is 50.

The spelling of 22481737691 in words is "twenty-two billion, four hundred eighty-one million, seven hundred thirty-seven thousand, six hundred ninety-one".