66448594435 has 16 divisors (see below), whose sum is σ = 80368596000. Its totient is φ = 52739721216.

The previous prime is 66448594427. The next prime is 66448594439. The reversal of 66448594435 is 53449584466.

It is a cyclic number.

It is not a de Polignac number, because 66448594435 - 2³ = 66448594427 is a prime.

It is a super-2 number, since 2×66448594435² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66448594435.

It is not an unprimeable number, because it can be changed into a prime (66448594439) 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 15 ways as a sum of consecutive naturals, for example, 453091 + ... + 581539.

It is an arithmetic number, because the mean of its divisors is an integer number (5023037250).

Almost surely, 2^66448594435 is an apocalyptic number.

66448594435 is a deficient number, since it is larger than the sum of its proper divisors (13920001565).

66448594435 is a wasteful number, since it uses less digits than its factorization.

66448594435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129270.

The product of its digits is 49766400, while the sum is 58.

The spelling of 66448594435 in words is "sixty-six billion, four hundred forty-eight million, five hundred ninety-four thousand, four hundred thirty-five".