445555404555544 has 16 divisors (see below), whose sum is σ = 835455814471800. Its totient is φ = 222767187363072.

The previous prime is 445555404555509. The next prime is 445555404555577.

445555404555544 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×445555404555544² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314184249 + ... + 1314523240.

Almost surely, 2^{445555404555544} is an apocalyptic number.

It is an amenable number.

445555404555544 is a deficient number, since it is larger than the sum of its proper divisors (389900409916256).

445555404555544 is a wasteful number, since it uses less digits than its factorization.

445555404555544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628728682 (or 2628728678 counting only the distinct ones).

The product of its (nonzero) digits is 1600000000, while the sum is 64.

The spelling of 445555404555544 in words is "four hundred forty-five trillion, five hundred fifty-five billion, four hundred four million, five hundred fifty-five thousand, five hundred forty-four".