66672833445 has 12 divisors (see below), whose sum is σ = 115566244716. Its totient is φ = 35558844480.

The previous prime is 66672833407. The next prime is 66672833449. The reversal of 66672833445 is 54433827666.

It can be written as a sum of positive squares in 2 ways, for example, as 42349935681 + 24322897764 = 205791^2 + 155958^2 .

It is not a de Polignac number, because 66672833445 - 2²⁰ = 66671784869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66672833391 and 66672833400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66672833449) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 740809216 + ... + 740809305.

It is an arithmetic number, because the mean of its divisors is an integer number (9630520393).

Almost surely, 2^66672833445 is an apocalyptic number.

It is an amenable number.

66672833445 is a deficient number, since it is larger than the sum of its proper divisors (48893411271).

66672833445 is a wasteful number, since it uses less digits than its factorization.

66672833445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481618532 (or 1481618529 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 54.

The spelling of 66672833445 in words is "sixty-six billion, six hundred seventy-two million, eight hundred thirty-three thousand, four hundred forty-five".