28307663999 has 2 divisors, whose sum is σ = 28307664000. Its totient is φ = 28307663998.

The previous prime is 28307663933. The next prime is 28307664029. The reversal of 28307663999 is 99936670382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28307663999 - 2²⁴ = 28290886783 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28307660999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14153831999 + 14153832000.

It is an arithmetic number, because the mean of its divisors is an integer number (14153832000).

Almost surely, 2^28307663999 is an apocalyptic number.

28307663999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28307663999 is an equidigital number, since it uses as much as digits as its factorization.

28307663999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 28307663999 in words is "twenty-eight billion, three hundred seven million, six hundred sixty-three thousand, nine hundred ninety-nine".