1276252627747 has 2 divisors, whose sum is σ = 1276252627748. Its totient is φ = 1276252627746.

The previous prime is 1276252627723. The next prime is 1276252627781. The reversal of 1276252627747 is 7477262526721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1276252627747 is a prime.

It is a super-2 number, since 2×1276252627747² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1276252627691 and 1276252627700.

It is not a weakly prime, because it can be changed into another prime (1276252697747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638126313873 + 638126313874.

It is an arithmetic number, because the mean of its divisors is an integer number (638126313874).

Almost surely, 2^{1276252627747} is an apocalyptic number.

1276252627747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276252627747 is an equidigital number, since it uses as much as digits as its factorization.

1276252627747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27659520, while the sum is 58.

The spelling of 1276252627747 in words is "one trillion, two hundred seventy-six billion, two hundred fifty-two million, six hundred twenty-seven thousand, seven hundred forty-seven".