1279057613111 has 2 divisors, whose sum is σ = 1279057613112. Its totient is φ = 1279057613110.

The previous prime is 1279057613077. The next prime is 1279057613129. The reversal of 1279057613111 is 1113167509721.

It is a strong prime.

It is an emirp because it is prime and its reverse (1113167509721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1279057613111 - 2⁶ = 1279057613047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279057613131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639528806555 + 639528806556.

It is an arithmetic number, because the mean of its divisors is an integer number (639528806556).

Almost surely, 2^{1279057613111} is an apocalyptic number.

1279057613111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279057613111 is an equidigital number, since it uses as much as digits as its factorization.

1279057613111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 44.

The spelling of 1279057613111 in words is "one trillion, two hundred seventy-nine billion, fifty-seven million, six hundred thirteen thousand, one hundred eleven".