28914857771687 has 2 divisors, whose sum is σ = 28914857771688. Its totient is φ = 28914857771686.

The previous prime is 28914857771627. The next prime is 28914857771719. The reversal of 28914857771687 is 78617775841982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28914857771687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28914857771617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14457428885843 + 14457428885844.

It is an arithmetic number, because the mean of its divisors is an integer number (14457428885844).

Almost surely, 2^{28914857771687} is an apocalyptic number.

28914857771687 is a deficient number, since it is larger than the sum of its proper divisors (1).

28914857771687 is an equidigital number, since it uses as much as digits as its factorization.

28914857771687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2655313920, while the sum is 80.

The spelling of 28914857771687 in words is "twenty-eight trillion, nine hundred fourteen billion, eight hundred fifty-seven million, seven hundred seventy-one thousand, six hundred eighty-seven".