1320444312277 has 2 divisors, whose sum is σ = 1320444312278. Its totient is φ = 1320444312276.

The previous prime is 1320444312247. The next prime is 1320444312373. The reversal of 1320444312277 is 7722134440231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708679432561 + 611764879716 = 841831^2 + 782154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320444312277 - 2²⁷ = 1320310094549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320444312247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660222156138 + 660222156139.

It is an arithmetic number, because the mean of its divisors is an integer number (660222156139).

Almost surely, 2^{1320444312277} is an apocalyptic number.

It is an amenable number.

1320444312277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320444312277 is an equidigital number, since it uses as much as digits as its factorization.

1320444312277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 1320444312277 in words is "one trillion, three hundred twenty billion, four hundred forty-four million, three hundred twelve thousand, two hundred seventy-seven".