22647805537 has 12 divisors (see below), whose sum is σ = 26358506580. Its totient is φ = 19402752096.

The previous prime is 22647805483. The next prime is 22647805553. The reversal of 22647805537 is 73550874622.

It can be written as a sum of positive squares in 2 ways, for example, as 15722902881 + 6924902656 = 125391^2 + 83216^2 .

It is not a de Polignac number, because 22647805537 - 2⁷ = 22647805409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (22647805337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14478 + ... + 213319.

It is an arithmetic number, because the mean of its divisors is an integer number (2196542215).

Almost surely, 2^22647805537 is an apocalyptic number.

It is an amenable number.

22647805537 is a deficient number, since it is larger than the sum of its proper divisors (3710701043).

22647805537 is a wasteful number, since it uses less digits than its factorization.

22647805537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229840 (or 229833 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 22647805537 in words is "twenty-two billion, six hundred forty-seven million, eight hundred five thousand, five hundred thirty-seven".