22527720436 has 24 divisors (see below), whose sum is σ = 43491606984. Its totient is φ = 10143813120.

The previous prime is 22527720431. The next prime is 22527720451. The reversal of 22527720436 is 63402772522.

It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 22527008100 = 844^2 + 150090^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22527720431) 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, 5281105 + ... + 5285368.

It is an arithmetic number, because the mean of its divisors is an integer number (1812150291).

Almost surely, 2^22527720436 is an apocalyptic number.

22527720436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22527720436 is a deficient number, since it is larger than the sum of its proper divisors (20963886548).

22527720436 is a wasteful number, since it uses less digits than its factorization.

22527720436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10566531 (or 10566529 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 22527720436 in words is "twenty-two billion, five hundred twenty-seven million, seven hundred twenty thousand, four hundred thirty-six".