1276880320213 has 2 divisors, whose sum is σ = 1276880320214. Its totient is φ = 1276880320212.

The previous prime is 1276880320187. The next prime is 1276880320217. The reversal of 1276880320213 is 3120230886721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830418480529 + 446461839684 = 911273^2 + 668178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276880320213 - 2²⁵ = 1276846765781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1276880320213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276880320217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638440160106 + 638440160107.

It is an arithmetic number, because the mean of its divisors is an integer number (638440160107).

Almost surely, 2^{1276880320213} is an apocalyptic number.

It is an amenable number.

1276880320213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276880320213 is an equidigital number, since it uses as much as digits as its factorization.

1276880320213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 1276880320213 in words is "one trillion, two hundred seventy-six billion, eight hundred eighty million, three hundred twenty thousand, two hundred thirteen".