287985060361591 has 2 divisors, whose sum is σ = 287985060361592. Its totient is φ = 287985060361590.

The previous prime is 287985060361561. The next prime is 287985060361613. The reversal of 287985060361591 is 195163060589782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287985060361591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287985060361591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287985060361511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143992530180795 + 143992530180796.

It is an arithmetic number, because the mean of its divisors is an integer number (143992530180796).

Almost surely, 2^{287985060361591} is an apocalyptic number.

287985060361591 is a deficient number, since it is larger than the sum of its proper divisors (1).

287985060361591 is an equidigital number, since it uses as much as digits as its factorization.

287985060361591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 195955200, while the sum is 70.

The spelling of 287985060361591 in words is "two hundred eighty-seven trillion, nine hundred eighty-five billion, sixty million, three hundred sixty-one thousand, five hundred ninety-one".