444653422457 has 16 divisors (see below), whose sum is σ = 449909171712. Its totient is φ = 439416848640.

The previous prime is 444653422453. The next prime is 444653422487. The reversal of 444653422457 is 754224356444.

It is a cyclic number.

It is not a de Polignac number, because 444653422457 - 2² = 444653422453 is a prime.

It is a super-2 number, since 2×444653422457² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444653422453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151912928 + ... + 151915854.

It is an arithmetic number, because the mean of its divisors is an integer number (28119323232).

Almost surely, 2^444653422457 is an apocalyptic number.

It is an amenable number.

444653422457 is a deficient number, since it is larger than the sum of its proper divisors (5255749255).

444653422457 is a wasteful number, since it uses less digits than its factorization.

444653422457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608.

The product of its digits is 12902400, while the sum is 50.

The spelling of 444653422457 in words is "four hundred forty-four billion, six hundred fifty-three million, four hundred twenty-two thousand, four hundred fifty-seven".