22724495987 has 2 divisors, whose sum is σ = 22724495988. Its totient is φ = 22724495986.

The previous prime is 22724495951. The next prime is 22724496007. The reversal of 22724495987 is 78959442722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22724495987 - 2⁶ = 22724495923 is a prime.

It is not a weakly prime, because it can be changed into another prime (22724495687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11362247993 + 11362247994.

It is an arithmetic number, because the mean of its divisors is an integer number (11362247994).

Almost surely, 2^22724495987 is an apocalyptic number.

22724495987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22724495987 is an equidigital number, since it uses as much as digits as its factorization.

22724495987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 59.

The spelling of 22724495987 in words is "twenty-two billion, seven hundred twenty-four million, four hundred ninety-five thousand, nine hundred eighty-seven".