4445161353991 has 2 divisors, whose sum is σ = 4445161353992. Its totient is φ = 4445161353990.

The previous prime is 4445161353977. The next prime is 4445161354021. The reversal of 4445161353991 is 1993531615444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4445161353991 - 2²⁵ = 4445127799559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4445161353911) 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 as a sum of consecutive naturals, namely, 2222580676995 + 2222580676996.

It is an arithmetic number, because the mean of its divisors is an integer number (2222580676996).

Almost surely, 2^{4445161353991} is an apocalyptic number.

4445161353991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445161353991 is an equidigital number, since it uses as much as digits as its factorization.

4445161353991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6998400, while the sum is 55.

The spelling of 4445161353991 in words is "four trillion, four hundred forty-five billion, one hundred sixty-one million, three hundred fifty-three thousand, nine hundred ninety-one".