445644131579 has 2 divisors, whose sum is σ = 445644131580. Its totient is φ = 445644131578.

The previous prime is 445644131497. The next prime is 445644131591. The reversal of 445644131579 is 975131446544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445644131579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445644131579.

It is not a weakly prime, because it can be changed into another prime (445644131279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222822065789 + 222822065790.

It is an arithmetic number, because the mean of its divisors is an integer number (222822065790).

Almost surely, 2^445644131579 is an apocalyptic number.

445644131579 is a deficient number, since it is larger than the sum of its proper divisors (1).

445644131579 is an equidigital number, since it uses as much as digits as its factorization.

445644131579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 53.

The spelling of 445644131579 in words is "four hundred forty-five billion, six hundred forty-four million, one hundred thirty-one thousand, five hundred seventy-nine".