1275328276847 has 4 divisors (see below), whose sum is σ = 1277766763560. Its totient is φ = 1272889790136.

The previous prime is 1275328276843. The next prime is 1275328276907. The reversal of 1275328276847 is 7486728235721.

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

It is a cyclic number.

It is not a de Polignac number, because 1275328276847 - 2² = 1275328276843 is a prime.

It is a super-2 number, since 2×1275328276847² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1275328276847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275328276843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219242572 + ... + 1219243617.

It is an arithmetic number, because the mean of its divisors is an integer number (319441690890).

Almost surely, 2^{1275328276847} is an apocalyptic number.

1275328276847 is a deficient number, since it is larger than the sum of its proper divisors (2438486713).

1275328276847 is an equidigital number, since it uses as much as digits as its factorization.

1275328276847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438486712.

The product of its digits is 63221760, while the sum is 62.

The spelling of 1275328276847 in words is "one trillion, two hundred seventy-five billion, three hundred twenty-eight million, two hundred seventy-six thousand, eight hundred forty-seven".