445644614539 has 2 divisors, whose sum is σ = 445644614540. Its totient is φ = 445644614538.

The previous prime is 445644614447. The next prime is 445644614573. The reversal of 445644614539 is 935416446544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445644614539 - 2²⁵ = 445611060107 is a prime.

It is a super-2 number, since 2×445644614539² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445644614539.

It is not a weakly prime, because it can be changed into another prime (445644614579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222822307269 + 222822307270.

It is an arithmetic number, because the mean of its divisors is an integer number (222822307270).

Almost surely, 2^445644614539 is an apocalyptic number.

445644614539 is a deficient number, since it is larger than the sum of its proper divisors (1).

445644614539 is an equidigital number, since it uses as much as digits as its factorization.

445644614539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24883200, while the sum is 55.

The spelling of 445644614539 in words is "four hundred forty-five billion, six hundred forty-four million, six hundred fourteen thousand, five hundred thirty-nine".