28997659213 has 2 divisors, whose sum is σ = 28997659214. Its totient is φ = 28997659212.

The previous prime is 28997659109. The next prime is 28997659219. The reversal of 28997659213 is 31295679982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19128826249 + 9868832964 = 138307^2 + 99342^2 .

It is a cyclic number.

It is not a de Polignac number, because 28997659213 - 2¹⁷ = 28997528141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28997659219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14498829606 + 14498829607.

It is an arithmetic number, because the mean of its divisors is an integer number (14498829607).

Almost surely, 2^28997659213 is an apocalyptic number.

It is an amenable number.

28997659213 is a deficient number, since it is larger than the sum of its proper divisors (1).

28997659213 is an equidigital number, since it uses as much as digits as its factorization.

28997659213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 61.

The spelling of 28997659213 in words is "twenty-eight billion, nine hundred ninety-seven million, six hundred fifty-nine thousand, two hundred thirteen".