1277753478479 has 2 divisors, whose sum is σ = 1277753478480. Its totient is φ = 1277753478478.

The previous prime is 1277753478437. The next prime is 1277753478487. The reversal of 1277753478479 is 9748743577721.

It is a strong prime.

It is an emirp because it is prime and its reverse (9748743577721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1277753478479 - 2¹² = 1277753474383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1277753478409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638876739239 + 638876739240.

It is an arithmetic number, because the mean of its divisors is an integer number (638876739240).

Almost surely, 2^{1277753478479} is an apocalyptic number.

1277753478479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277753478479 is an equidigital number, since it uses as much as digits as its factorization.

1277753478479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580849920, while the sum is 71.

The spelling of 1277753478479 in words is "one trillion, two hundred seventy-seven billion, seven hundred fifty-three million, four hundred seventy-eight thousand, four hundred seventy-nine".