1264168039289 has 2 divisors, whose sum is σ = 1264168039290. Its totient is φ = 1264168039288.

The previous prime is 1264168039249. The next prime is 1264168039493. The reversal of 1264168039289 is 9829308614621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996602890000 + 267565149289 = 998300^2 + 517267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264168039289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264168039249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632084019644 + 632084019645.

It is an arithmetic number, because the mean of its divisors is an integer number (632084019645).

Almost surely, 2^{1264168039289} is an apocalyptic number.

It is an amenable number.

1264168039289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264168039289 is an equidigital number, since it uses as much as digits as its factorization.

1264168039289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 1264168039289 in words is "one trillion, two hundred sixty-four billion, one hundred sixty-eight million, thirty-nine thousand, two hundred eighty-nine".