28487787899 has 2 divisors, whose sum is σ = 28487787900. Its totient is φ = 28487787898.

The previous prime is 28487787863. The next prime is 28487787907. The reversal of 28487787899 is 99878778482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28487787899 - 2¹² = 28487783803 is a prime.

It is not a weakly prime, because it can be changed into another prime (28487187899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14243893949 + 14243893950.

It is an arithmetic number, because the mean of its divisors is an integer number (14243893950).

Almost surely, 2^28487787899 is an apocalyptic number.

28487787899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28487787899 is an equidigital number, since it uses as much as digits as its factorization.

28487787899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 910393344, while the sum is 77.

The spelling of 28487787899 in words is "twenty-eight billion, four hundred eighty-seven million, seven hundred eighty-seven thousand, eight hundred ninety-nine".