161044224643 has 2 divisors, whose sum is σ = 161044224644. Its totient is φ = 161044224642.

The previous prime is 161044224623. The next prime is 161044224767. The reversal of 161044224643 is 346422440161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161044224643 - 2¹⁷ = 161044093571 is a prime.

It is not a weakly prime, because it can be changed into another prime (161044224623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80522112321 + 80522112322.

It is an arithmetic number, because the mean of its divisors is an integer number (80522112322).

Almost surely, 2^161044224643 is an apocalyptic number.

161044224643 is a deficient number, since it is larger than the sum of its proper divisors (1).

161044224643 is an equidigital number, since it uses as much as digits as its factorization.

161044224643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 161044224643 in words is "one hundred sixty-one billion, forty-four million, two hundred twenty-four thousand, six hundred forty-three".