744869525968457 has 2 divisors, whose sum is σ = 744869525968458. Its totient is φ = 744869525968456.

The previous prime is 744869525968439. The next prime is 744869525968493. The reversal of 744869525968457 is 754869525968447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478548700571536 + 266320825396921 = 21875756^2 + 16319339^2 .

It is an emirp because it is prime and its reverse (754869525968447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 744869525968457 - 2²⁸ = 744869257533001 is a prime.

It is a super-2 number, since 2×744869525968457² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (744869525968657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372434762984228 + 372434762984229.

It is an arithmetic number, because the mean of its divisors is an integer number (372434762984229).

Almost surely, 2^{744869525968457} is an apocalyptic number.

It is an amenable number.

744869525968457 is a deficient number, since it is larger than the sum of its proper divisors (1).

744869525968457 is an equidigital number, since it uses as much as digits as its factorization.

744869525968457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216000, while the sum is 89.

The spelling of 744869525968457 in words is "seven hundred forty-four trillion, eight hundred sixty-nine billion, five hundred twenty-five million, nine hundred sixty-eight thousand, four hundred fifty-seven".