1272237687751 has 2 divisors, whose sum is σ = 1272237687752. Its totient is φ = 1272237687750.

The previous prime is 1272237687737. The next prime is 1272237687761. The reversal of 1272237687751 is 1577867322721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1272237687751 - 2³⁹ = 722481873863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272237687761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636118843875 + 636118843876.

It is an arithmetic number, because the mean of its divisors is an integer number (636118843876).

Almost surely, 2^{1272237687751} is an apocalyptic number.

1272237687751 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272237687751 is an equidigital number, since it uses as much as digits as its factorization.

1272237687751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13829760, while the sum is 58.

The spelling of 1272237687751 in words is "one trillion, two hundred seventy-two billion, two hundred thirty-seven million, six hundred eighty-seven thousand, seven hundred fifty-one".