1326640831379 has 2 divisors, whose sum is σ = 1326640831380. Its totient is φ = 1326640831378.

The previous prime is 1326640831333. The next prime is 1326640831387. The reversal of 1326640831379 is 9731380466231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1326640831379 - 2²⁸ = 1326372395923 is a prime.

It is a super-2 number, since 2×1326640831379² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1326640831379.

It is not a weakly prime, because it can be changed into another prime (1326640831079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663320415689 + 663320415690.

It is an arithmetic number, because the mean of its divisors is an integer number (663320415690).

Almost surely, 2^{1326640831379} is an apocalyptic number.

1326640831379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326640831379 is an equidigital number, since it uses as much as digits as its factorization.

1326640831379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 1326640831379 in words is "one trillion, three hundred twenty-six billion, six hundred forty million, eight hundred thirty-one thousand, three hundred seventy-nine".