189293612666687 has 2 divisors, whose sum is σ = 189293612666688. Its totient is φ = 189293612666686.

The previous prime is 189293612666671. The next prime is 189293612666699. The reversal of 189293612666687 is 786666216392981.

It is a strong prime.

It is an emirp because it is prime and its reverse (786666216392981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189293612666687 - 2⁴ = 189293612666671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189293612666287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94646806333343 + 94646806333344.

It is an arithmetic number, because the mean of its divisors is an integer number (94646806333344).

Almost surely, 2^{189293612666687} is an apocalyptic number.

189293612666687 is a deficient number, since it is larger than the sum of its proper divisors (1).

189293612666687 is an equidigital number, since it uses as much as digits as its factorization.

189293612666687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386105856, while the sum is 80.

The spelling of 189293612666687 in words is "one hundred eighty-nine trillion, two hundred ninety-three billion, six hundred twelve million, six hundred sixty-six thousand, six hundred eighty-seven".