1263715276801 has 4 divisors (see below), whose sum is σ = 1338051469572. Its totient is φ = 1189379084032.

The previous prime is 1263715276753. The next prime is 1263715276819. The reversal of 1263715276801 is 1086725173621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 616301932401 + 647413344400 = 785049^2 + 804620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263715276801 - 2⁷ = 1263715276673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263715276001) 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 in 3 ways as a sum of consecutive naturals, for example, 37168096360 + ... + 37168096393.

It is an arithmetic number, because the mean of its divisors is an integer number (334512867393).

Almost surely, 2^{1263715276801} is an apocalyptic number.

It is an amenable number.

1263715276801 is a deficient number, since it is larger than the sum of its proper divisors (74336192771).

1263715276801 is an equidigital number, since it uses as much as digits as its factorization.

1263715276801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74336192770.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 1263715276801 in words is "one trillion, two hundred sixty-three billion, seven hundred fifteen million, two hundred seventy-six thousand, eight hundred one".