445270618444 has 24 divisors (see below), whose sum is σ = 780428049408. Its totient is φ = 222291298320.

The previous prime is 445270618421. The next prime is 445270618487. The reversal of 445270618444 is 444816072544.

It is a super-2 number, since 2×445270618444² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 18910959 + ... + 18934489.

It is an arithmetic number, because the mean of its divisors is an integer number (32517835392).

Almost surely, 2^445270618444 is an apocalyptic number.

It is an amenable number.

445270618444 is a deficient number, since it is larger than the sum of its proper divisors (335157430964).

445270618444 is a wasteful number, since it uses less digits than its factorization.

445270618444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30645 (or 30643 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 49.

The spelling of 445270618444 in words is "four hundred forty-five billion, two hundred seventy million, six hundred eighteen thousand, four hundred forty-four".