22281652557 has 8 divisors (see below), whose sum is σ = 33009855680. Its totient is φ = 14854435020.

The previous prime is 22281652553. The next prime is 22281652609. The reversal of 22281652557 is 75525618222.

22281652557 is a `hidden beast` number, since 22 + 28 + 1 + 6 + 52 + 557 = 666.

It is not a de Polignac number, because 22281652557 - 2² = 22281652553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22281652553) 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, 412623169 + ... + 412623222.

It is an arithmetic number, because the mean of its divisors is an integer number (4126231960).

Almost surely, 2^22281652557 is an apocalyptic number.

22281652557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22281652557 is a deficient number, since it is larger than the sum of its proper divisors (10728203123).

22281652557 is an equidigital number, since it uses as much as digits as its factorization.

22281652557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825246400 (or 825246394 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The spelling of 22281652557 in words is "twenty-two billion, two hundred eighty-one million, six hundred fifty-two thousand, five hundred fifty-seven".