28716001677637 has 2 divisors, whose sum is σ = 28716001677638. Its totient is φ = 28716001677636.

The previous prime is 28716001677527. The next prime is 28716001677659. The reversal of 28716001677637 is 73677610061782.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15158516839236 + 13557484838401 = 3893394^2 + 3682049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28716001677637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28716001677667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14358000838818 + 14358000838819.

It is an arithmetic number, because the mean of its divisors is an integer number (14358000838819).

Almost surely, 2^{28716001677637} is an apocalyptic number.

It is an amenable number.

28716001677637 is a deficient number, since it is larger than the sum of its proper divisors (1).

28716001677637 is an equidigital number, since it uses as much as digits as its factorization.

28716001677637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 28716001677637 in words is "twenty-eight trillion, seven hundred sixteen billion, one million, six hundred seventy-seven thousand, six hundred thirty-seven".