28307660999 has 2 divisors, whose sum is σ = 28307661000. Its totient is φ = 28307660998.

The previous prime is 28307660963. The next prime is 28307661007. The reversal of 28307660999 is 99906670382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28307660999 - 2²⁴ = 28290883783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28307660099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14153830499 + 14153830500.

It is an arithmetic number, because the mean of its divisors is an integer number (14153830500).

Almost surely, 2^28307660999 is an apocalyptic number.

28307660999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28307660999 is an equidigital number, since it uses as much as digits as its factorization.

28307660999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 28307660999 in words is "twenty-eight billion, three hundred seven million, six hundred sixty thousand, nine hundred ninety-nine".