22443544087 has 2 divisors, whose sum is σ = 22443544088. Its totient is φ = 22443544086.

The previous prime is 22443544051. The next prime is 22443544091. The reversal of 22443544087 is 78044534422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22443544087 is a prime.

It is a super-2 number, since 2×22443544087² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22443542087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221772043 + 11221772044.

It is an arithmetic number, because the mean of its divisors is an integer number (11221772044).

Almost surely, 2^22443544087 is an apocalyptic number.

22443544087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22443544087 is an equidigital number, since it uses as much as digits as its factorization.

22443544087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 860160, while the sum is 43.

The spelling of 22443544087 in words is "twenty-two billion, four hundred forty-three million, five hundred forty-four thousand, eighty-seven".