440457519945 has 64 divisors (see below), whose sum is σ = 739559522304. Its totient is φ = 223564872960.

The previous prime is 440457519923. The next prime is 440457519959. The reversal of 440457519945 is 549915754044.

It is a de Polignac number, because none of the positive numbers 2^k-440457519945 is a prime.

It is a super-2 number, since 2×440457519945² (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 (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19086484 + ... + 19109546.

It is an arithmetic number, because the mean of its divisors is an integer number (11555617536).

Almost surely, 2^440457519945 is an apocalyptic number.

It is an amenable number.

440457519945 is a deficient number, since it is larger than the sum of its proper divisors (299102002359).

440457519945 is a wasteful number, since it uses less digits than its factorization.

440457519945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23782.

The product of its (nonzero) digits is 18144000, while the sum is 57.

The spelling of 440457519945 in words is "four hundred forty billion, four hundred fifty-seven million, five hundred nineteen thousand, nine hundred forty-five".