22472447581 has 8 divisors (see below), whose sum is σ = 23889420000. Its totient is φ = 21078896400.

The previous prime is 22472447567. The next prime is 22472447617. The reversal of 22472447581 is 18574427422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22472447581 - 2¹³ = 22472439389 is a prime.

It is a super-2 number, since 2×22472447581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22472447281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5853331 + ... + 5857168.

It is an arithmetic number, because the mean of its divisors is an integer number (2986177500).

Almost surely, 2^22472447581 is an apocalyptic number.

It is an amenable number.

22472447581 is a deficient number, since it is larger than the sum of its proper divisors (1416972419).

22472447581 is a wasteful number, since it uses less digits than its factorization.

22472447581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11710619.

The product of its digits is 1003520, while the sum is 46.

The spelling of 22472447581 in words is "twenty-two billion, four hundred seventy-two million, four hundred forty-seven thousand, five hundred eighty-one".