22515140287 has 2 divisors, whose sum is σ = 22515140288. Its totient is φ = 22515140286.

The previous prime is 22515140237. The next prime is 22515140299. The reversal of 22515140287 is 78204151522.

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-22515140287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22515140227) 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 as a sum of consecutive naturals, namely, 11257570143 + 11257570144.

It is an arithmetic number, because the mean of its divisors is an integer number (11257570144).

Almost surely, 2^22515140287 is an apocalyptic number.

22515140287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22515140287 is an equidigital number, since it uses as much as digits as its factorization.

22515140287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 22515140287 in words is "twenty-two billion, five hundred fifteen million, one hundred forty thousand, two hundred eighty-seven".