4464781329649 has 4 divisors (see below), whose sum is σ = 4480670231460. Its totient is φ = 4448892427840.

The previous prime is 4464781329647. The next prime is 4464781329653. The reversal of 4464781329649 is 9469231874644.

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 3845305293025 + 619476036624 = 1960945^2 + 787068^2 .

It is a cyclic number.

It is not a de Polignac number, because 4464781329649 - 2¹ = 4464781329647 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4464781329643) 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 in 3 ways as a sum of consecutive naturals, for example, 7944450484 + ... + 7944451045.

It is an arithmetic number, because the mean of its divisors is an integer number (1120167557865).

Almost surely, 2^{4464781329649} is an apocalyptic number.

It is an amenable number.

4464781329649 is a deficient number, since it is larger than the sum of its proper divisors (15888901811).

4464781329649 is a wasteful number, since it uses less digits than its factorization.

4464781329649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15888901810.

The product of its digits is 250822656, while the sum is 67.

The spelling of 4464781329649 in words is "four trillion, four hundred sixty-four billion, seven hundred eighty-one million, three hundred twenty-nine thousand, six hundred forty-nine".