44640397163 has 2 divisors, whose sum is σ = 44640397164. Its totient is φ = 44640397162.

The previous prime is 44640397133. The next prime is 44640397171. The reversal of 44640397163 is 36179304644.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44640397163 - 2¹² = 44640393067 is a prime.

It is not a weakly prime, because it can be changed into another prime (44640397133) 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, 22320198581 + 22320198582.

It is an arithmetic number, because the mean of its divisors is an integer number (22320198582).

Almost surely, 2^44640397163 is an apocalyptic number.

44640397163 is a deficient number, since it is larger than the sum of its proper divisors (1).

44640397163 is an equidigital number, since it uses as much as digits as its factorization.

44640397163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 44640397163 in words is "forty-four billion, six hundred forty million, three hundred ninety-seven thousand, one hundred sixty-three".