28371951199 has 2 divisors, whose sum is σ = 28371951200. Its totient is φ = 28371951198.

The previous prime is 28371951197. The next prime is 28371951233. The reversal of 28371951199 is 99115917382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28371951199 - 2¹ = 28371951197 is a prime.

It is a super-2 number, since 2×28371951199² (a number of 22 digits) contains 22 as substring.

Together with 28371951197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28371951193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14185975599 + 14185975600.

It is an arithmetic number, because the mean of its divisors is an integer number (14185975600).

Almost surely, 2^28371951199 is an apocalyptic number.

28371951199 is a deficient number, since it is larger than the sum of its proper divisors (1).

28371951199 is an equidigital number, since it uses as much as digits as its factorization.

28371951199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 55.

The spelling of 28371951199 in words is "twenty-eight billion, three hundred seventy-one million, nine hundred fifty-one thousand, one hundred ninety-nine".