744551161393 has 16 divisors (see below), whose sum is σ = 810484935120. Its totient is φ = 679861518336.

The previous prime is 744551161303. The next prime is 744551161439. The reversal of 744551161393 is 393161155447.

It can be written as a sum of positive squares in 8 ways, for example, as 358571020864 + 385980140529 = 598808^2 + 621273^2 .

It is not a de Polignac number, because 744551161393 - 2²⁵ = 744517606961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744551161303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2466321 + ... + 2751697.

It is an arithmetic number, because the mean of its divisors is an integer number (50655308445).

Almost surely, 2^744551161393 is an apocalyptic number.

It is an amenable number.

744551161393 is a deficient number, since it is larger than the sum of its proper divisors (65933773727).

744551161393 is a wasteful number, since it uses less digits than its factorization.

744551161393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287556.

The product of its digits is 1360800, while the sum is 49.

The spelling of 744551161393 in words is "seven hundred forty-four billion, five hundred fifty-one million, one hundred sixty-one thousand, three hundred ninety-three".