1247169668459 has 16 divisors (see below), whose sum is σ = 1466063958240. Its totient is φ = 1045963349760.

The previous prime is 1247169668443. The next prime is 1247169668471. The reversal of 1247169668459 is 9548669617421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1247169668459 - 2⁴ = 1247169668443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247169668489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2307242 + ... + 2796015.

It is an arithmetic number, because the mean of its divisors is an integer number (91628997390).

Almost surely, 2^{1247169668459} is an apocalyptic number.

1247169668459 is a deficient number, since it is larger than the sum of its proper divisors (218894289781).

1247169668459 is a wasteful number, since it uses less digits than its factorization.

1247169668459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104990.

The product of its digits is 156764160, while the sum is 68.

The spelling of 1247169668459 in words is "one trillion, two hundred forty-seven billion, one hundred sixty-nine million, six hundred sixty-eight thousand, four hundred fifty-nine".