744506400744961 has 4 divisors (see below), whose sum is σ = 744520933705300. Its totient is φ = 744491867784624.

The previous prime is 744506400744907. The next prime is 744506400745069. The reversal of 744506400744961 is 169447004605447.

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 326460573968400 + 418045826776561 = 18068220^2 + 20446169^2 .

It is a cyclic number.

It is not a de Polignac number, because 744506400744961 - 2⁷ = 744506400744833 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 744506400744961.

It is not an unprimeable number, because it can be changed into a prime (744506400744061) 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, 7266403326 + ... + 7266505783.

It is an arithmetic number, because the mean of its divisors is an integer number (186130233426325).

Almost surely, 2^{744506400744961} is an apocalyptic number.

It is an amenable number.

744506400744961 is a deficient number, since it is larger than the sum of its proper divisors (14532960339).

744506400744961 is a wasteful number, since it uses less digits than its factorization.

744506400744961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14532960338.

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 744506400744961 in words is "seven hundred forty-four trillion, five hundred six billion, four hundred million, seven hundred forty-four thousand, nine hundred sixty-one".