28871699407 has 2 divisors, whose sum is σ = 28871699408. Its totient is φ = 28871699406.

The previous prime is 28871699401. The next prime is 28871699443. The reversal of 28871699407 is 70499617882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28871699407 - 2¹⁵ = 28871666639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28871699401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14435849703 + 14435849704.

It is an arithmetic number, because the mean of its divisors is an integer number (14435849704).

Almost surely, 2^28871699407 is an apocalyptic number.

28871699407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28871699407 is an equidigital number, since it uses as much as digits as its factorization.

28871699407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 28871699407 in words is "twenty-eight billion, eight hundred seventy-one million, six hundred ninety-nine thousand, four hundred seven".