28670956499 has 2 divisors, whose sum is σ = 28670956500. Its totient is φ = 28670956498.

The previous prime is 28670956493. The next prime is 28670956507. The reversal of 28670956499 is 99465907682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28670956499 - 2¹² = 28670952403 is a prime.

It is not a weakly prime, because it can be changed into another prime (28670956493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14335478249 + 14335478250.

It is an arithmetic number, because the mean of its divisors is an integer number (14335478250).

Almost surely, 2^28670956499 is an apocalyptic number.

28670956499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670956499 is an equidigital number, since it uses as much as digits as its factorization.

28670956499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 65.

The spelling of 28670956499 in words is "twenty-eight billion, six hundred seventy million, nine hundred fifty-six thousand, four hundred ninety-nine".