22517703481 has 81 divisors (see below), whose sum is σ = 30444427719. Its totient is φ = 16595324928.

The previous prime is 22517703479. The next prime is 22517703487. The reversal of 22517703481 is 18430771522.

The square root of 22517703481 is 150059.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 14504589225 + 8013114256 = 120435^2 + 89516^2 .

It is not a de Polignac number, because 22517703481 - 2¹ = 22517703479 is a prime.

It is a super-2 number, since 2×22517703481² (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 (22517703487) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 232141225 + ... + 232141321.

Almost surely, 2^22517703481 is an apocalyptic number.

22517703481 is the 150059-th square number.

22517703481 is the 75030-th centered octagonal number.

It is an amenable number.

22517703481 is a deficient number, since it is larger than the sum of its proper divisors (7926724238).

22517703481 is an equidigital number, since it uses as much as digits as its factorization.

22517703481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 22517703481 in words is "twenty-two billion, five hundred seventeen million, seven hundred three thousand, four hundred eighty-one".