1279057613429 has 2 divisors, whose sum is σ = 1279057613430. Its totient is φ = 1279057613428.

The previous prime is 1279057613413. The next prime is 1279057613461. The reversal of 1279057613429 is 9243167509721.

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., 1273742474404 + 5315139025 = 1128602^2 + 72905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1279057613429 - 2⁴ = 1279057613413 is a prime.

It is a super-2 number, since 2×1279057613429² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279057613479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639528806714 + 639528806715.

It is an arithmetic number, because the mean of its divisors is an integer number (639528806715).

Almost surely, 2^{1279057613429} is an apocalyptic number.

It is an amenable number.

1279057613429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279057613429 is an equidigital number, since it uses as much as digits as its factorization.

1279057613429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 1279057613429 in words is "one trillion, two hundred seventy-nine billion, fifty-seven million, six hundred thirteen thousand, four hundred twenty-nine".