28126558699 has 2 divisors, whose sum is σ = 28126558700. Its totient is φ = 28126558698.

The previous prime is 28126558673. The next prime is 28126558703. The reversal of 28126558699 is 99685562182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28126558699 is a prime.

It is a super-2 number, since 2×28126558699² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28126556699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14063279349 + 14063279350.

It is an arithmetic number, because the mean of its divisors is an integer number (14063279350).

Almost surely, 2^28126558699 is an apocalyptic number.

28126558699 is a deficient number, since it is larger than the sum of its proper divisors (1).

28126558699 is an equidigital number, since it uses as much as digits as its factorization.

28126558699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18662400, while the sum is 61.

The spelling of 28126558699 in words is "twenty-eight billion, one hundred twenty-six million, five hundred fifty-eight thousand, six hundred ninety-nine".