1131321757879 has 2 divisors, whose sum is σ = 1131321757880. Its totient is φ = 1131321757878.

The previous prime is 1131321757877. The next prime is 1131321757897. The reversal of 1131321757879 is 9787571231311.

Together with next prime (1131321757897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131321757879 - 2¹ = 1131321757877 is a prime.

Together with 1131321757877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131321757877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565660878939 + 565660878940.

It is an arithmetic number, because the mean of its divisors is an integer number (565660878940).

Almost surely, 2^{1131321757879} is an apocalyptic number.

1131321757879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131321757879 is an equidigital number, since it uses as much as digits as its factorization.

1131321757879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 55.

The spelling of 1131321757879 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, seven hundred fifty-seven thousand, eight hundred seventy-nine".