744470164732561 has 4 divisors (see below), whose sum is σ = 745141463349300. Its totient is φ = 743798866115824.

The previous prime is 744470164732529. The next prime is 744470164732631. The reversal of 744470164732561 is 165237461074447.

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 3631860193536 + 740838304539025 = 1905744^2 + 27218345^2 .

It is a cyclic number.

It is not a de Polignac number, because 744470164732561 - 2⁵ = 744470164732529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 744470164732561.

It is not an unprimeable number, because it can be changed into a prime (744470164738561) 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 in 3 ways as a sum of consecutive naturals, for example, 335649306706 + ... + 335649308923.

It is an arithmetic number, because the mean of its divisors is an integer number (186285365837325).

Almost surely, 2^{744470164732561} is an apocalyptic number.

It is an amenable number.

744470164732561 is a deficient number, since it is larger than the sum of its proper divisors (671298616739).

744470164732561 is a wasteful number, since it uses less digits than its factorization.

744470164732561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671298616738.

The product of its (nonzero) digits is 94832640, while the sum is 61.

The spelling of 744470164732561 in words is "seven hundred forty-four trillion, four hundred seventy billion, one hundred sixty-four million, seven hundred thirty-two thousand, five hundred sixty-one".