1287747526159 has 2 divisors, whose sum is σ = 1287747526160. Its totient is φ = 1287747526158.

The previous prime is 1287747526147. The next prime is 1287747526193. The reversal of 1287747526159 is 9516257477821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1287747526159 - 2²¹ = 1287745429007 is a prime.

It is a super-2 number, since 2×1287747526159² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1287747526159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287747526259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643873763079 + 643873763080.

It is an arithmetic number, because the mean of its divisors is an integer number (643873763080).

Almost surely, 2^{1287747526159} is an apocalyptic number.

1287747526159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287747526159 is an equidigital number, since it uses as much as digits as its factorization.

1287747526159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59270400, while the sum is 64.

The spelling of 1287747526159 in words is "one trillion, two hundred eighty-seven billion, seven hundred forty-seven million, five hundred twenty-six thousand, one hundred fifty-nine".