287172158687 has 2 divisors, whose sum is σ = 287172158688. Its totient is φ = 287172158686.

The previous prime is 287172158659. The next prime is 287172158729. The reversal of 287172158687 is 786851271782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 287172158687 - 2⁸ = 287172158431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287172155687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143586079343 + 143586079344.

It is an arithmetic number, because the mean of its divisors is an integer number (143586079344).

Almost surely, 2^287172158687 is an apocalyptic number.

287172158687 is a deficient number, since it is larger than the sum of its proper divisors (1).

287172158687 is an equidigital number, since it uses as much as digits as its factorization.

287172158687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21073920, while the sum is 62.

The spelling of 287172158687 in words is "two hundred eighty-seven billion, one hundred seventy-two million, one hundred fifty-eight thousand, six hundred eighty-seven".