22447688500 has 24 divisors (see below), whose sum is σ = 49025752776. Its totient is φ = 8979075200.

The previous prime is 22447688489. The next prime is 22447688503. The reversal of 22447688500 is 588674422.

It can be written as a sum of positive squares in 4 ways, for example, as 7001672976 + 15446015524 = 83676^2 + 124282^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22447688503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22447189 + ... + 22448188.

It is an arithmetic number, because the mean of its divisors is an integer number (2042739699).

Almost surely, 2^22447688500 is an apocalyptic number.

22447688500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22447688500 is an abundant number, since it is smaller than the sum of its proper divisors (26578064276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22447688500 is a wasteful number, since it uses less digits than its factorization.

22447688500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44895396 (or 44895384 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 22447688500 in words is "twenty-two billion, four hundred forty-seven million, six hundred eighty-eight thousand, five hundred".