22471993479 has 16 divisors (see below), whose sum is σ = 32278321152. Its totient is φ = 13824271968.

The previous prime is 22471993469. The next prime is 22471993493. The reversal of 22471993479 is 97439917422.

It is a happy number.

It is not a de Polignac number, because 22471993479 - 2¹⁹ = 22471469191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22471993459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22594 + ... + 213200.

It is an arithmetic number, because the mean of its divisors is an integer number (2017395072).

Almost surely, 2^22471993479 is an apocalyptic number.

22471993479 is a deficient number, since it is larger than the sum of its proper divisors (9806327673).

22471993479 is a wasteful number, since it uses less digits than its factorization.

22471993479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193646.

The product of its digits is 6858432, while the sum is 57.

The spelling of 22471993479 in words is "twenty-two billion, four hundred seventy-one million, nine hundred ninety-three thousand, four hundred seventy-nine".