744704754311405 has 4 divisors (see below), whose sum is σ = 893645705173692. Its totient is φ = 595763803449120.

The previous prime is 744704754311387. The next prime is 744704754311407. The reversal of 744704754311405 is 504113457407447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 409697514252196 + 335007240059209 = 20240986^2 + 18303203^2 .

It is not a de Polignac number, because 744704754311405 - 2¹⁸ = 744704754049261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744704754311407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74470475431136 + ... + 74470475431145.

It is an arithmetic number, because the mean of its divisors is an integer number (223411426293423).

Almost surely, 2^{744704754311405} is an apocalyptic number.

It is an amenable number.

744704754311405 is a deficient number, since it is larger than the sum of its proper divisors (148940950862287).

744704754311405 is a wasteful number, since it uses less digits than its factorization.

744704754311405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148940950862286.

The product of its (nonzero) digits is 26342400, while the sum is 56.

The spelling of 744704754311405 in words is "seven hundred forty-four trillion, seven hundred four billion, seven hundred fifty-four million, three hundred eleven thousand, four hundred five".