28231753666187 has 2 divisors, whose sum is σ = 28231753666188. Its totient is φ = 28231753666186.

The previous prime is 28231753666183. The next prime is 28231753666223. The reversal of 28231753666187 is 78166635713282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28231753666187 - 2² = 28231753666183 is a prime.

It is not a weakly prime, because it can be changed into another prime (28231753666183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14115876833093 + 14115876833094.

It is an arithmetic number, because the mean of its divisors is an integer number (14115876833094).

Almost surely, 2^{28231753666187} is an apocalyptic number.

28231753666187 is a deficient number, since it is larger than the sum of its proper divisors (1).

28231753666187 is an equidigital number, since it uses as much as digits as its factorization.

28231753666187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 65.

The spelling of 28231753666187 in words is "twenty-eight trillion, two hundred thirty-one billion, seven hundred fifty-three million, six hundred sixty-six thousand, one hundred eighty-seven".