744545512657 has 2 divisors, whose sum is σ = 744545512658. Its totient is φ = 744545512656.

The previous prime is 744545512591. The next prime is 744545512687. The reversal of 744545512657 is 756215545447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 716589338256 + 27956174401 = 846516^2 + 167201^2 .

It is a cyclic number.

It is not a de Polignac number, because 744545512657 - 2²³ = 744537124049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 744545512598 and 744545512607.

It is not a weakly prime, because it can be changed into another prime (744545512687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372272756328 + 372272756329.

It is an arithmetic number, because the mean of its divisors is an integer number (372272756329).

Almost surely, 2^744545512657 is an apocalyptic number.

It is an amenable number.

744545512657 is a deficient number, since it is larger than the sum of its proper divisors (1).

744545512657 is an equidigital number, since it uses as much as digits as its factorization.

744545512657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520000, while the sum is 55.

The spelling of 744545512657 in words is "seven hundred forty-four billion, five hundred forty-five million, five hundred twelve thousand, six hundred fifty-seven".