749847072257 has 2 divisors, whose sum is σ = 749847072258. Its totient is φ = 749847072256.

The previous prime is 749847072193. The next prime is 749847072259. The reversal of 749847072257 is 752270748947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419125465201 + 330721607056 = 647399^2 + 575084^2 .

It is a cyclic number.

It is not a de Polignac number, because 749847072257 - 2⁶ = 749847072193 is a prime.

Together with 749847072259, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 749847072257.

It is not a weakly prime, because it can be changed into another prime (749847072259) 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, 374923536128 + 374923536129.

It is an arithmetic number, because the mean of its divisors is an integer number (374923536129).

Almost surely, 2^749847072257 is an apocalyptic number.

It is an amenable number.

749847072257 is a deficient number, since it is larger than the sum of its proper divisors (1).

749847072257 is an equidigital number, since it uses as much as digits as its factorization.

749847072257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55319040, while the sum is 62.

The spelling of 749847072257 in words is "seven hundred forty-nine billion, eight hundred forty-seven million, seventy-two thousand, two hundred fifty-seven".