22471981479 has 24 divisors (see below), whose sum is σ = 34426091232. Its totient is φ = 14095033920.

The previous prime is 22471981459. The next prime is 22471981489. The reversal of 22471981479 is 97418917422.

22471981479 is a `hidden beast` number, since 2 + 2 + 471 + 98 + 14 + 79 = 666.

It is not a de Polignac number, because 22471981479 - 2¹² = 22471977383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22471981439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877212 + ... + 902465.

It is an arithmetic number, because the mean of its divisors is an integer number (1434420468).

Almost surely, 2^22471981479 is an apocalyptic number.

22471981479 is a deficient number, since it is larger than the sum of its proper divisors (11954109753).

22471981479 is a wasteful number, since it uses less digits than its factorization.

22471981479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779767 (or 1779764 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 22471981479 in words is "twenty-two billion, four hundred seventy-one million, nine hundred eighty-one thousand, four hundred seventy-nine".