1276053671 has 2 divisors, whose sum is σ = 1276053672. Its totient is φ = 1276053670.

The previous prime is 1276053617. The next prime is 1276053673. The reversal of 1276053671 is 1763506721.

Together with previous prime (1276053617) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1276053671 - 2⁶ = 1276053607 is a prime.

It is a Sophie Germain prime.

Together with 1276053673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276053673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638026835 + 638026836.

It is an arithmetic number, because the mean of its divisors is an integer number (638026836).

Almost surely, 2^1276053671 is an apocalyptic number.

1276053671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276053671 is an equidigital number, since it uses as much as digits as its factorization.

1276053671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1276053671 is about 35721.8934408578. The cubic root of 1276053671 is about 1084.6500661743.

The spelling of 1276053671 in words is "one billion, two hundred seventy-six million, fifty-three thousand, six hundred seventy-one".