445755137574321 has 24 divisors (see below), whose sum is σ = 646254788424960. Its totient is φ = 296068947896736.

The previous prime is 445755137574319. The next prime is 445755137574337. The reversal of 445755137574321 is 123475731557544.

It is a happy number.

445755137574321 is a `hidden beast` number, since 4 + 4 + 5 + 7 + 5 + 5 + 1 + 37 + 574 + 3 + 21 = 666.

It is not a de Polignac number, because 445755137574321 - 2¹ = 445755137574319 is a prime.

It is a super-2 number, since 2×445755137574321² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445755137504321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17526496 + ... + 34622078.

It is an arithmetic number, because the mean of its divisors is an integer number (26927282851040).

Almost surely, 2^{445755137574321} is an apocalyptic number.

It is an amenable number.

445755137574321 is a deficient number, since it is larger than the sum of its proper divisors (200499650850639).

445755137574321 is a wasteful number, since it uses less digits than its factorization.

445755137574321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17106325 (or 17106322 counting only the distinct ones).

The product of its digits is 246960000, while the sum is 63.

The spelling of 445755137574321 in words is "four hundred forty-five trillion, seven hundred fifty-five billion, one hundred thirty-seven million, five hundred seventy-four thousand, three hundred twenty-one".