66351144632 has 16 divisors (see below), whose sum is σ = 124562188800. Its totient is φ = 33134560960.

The previous prime is 66351144583. The next prime is 66351144637. The reversal of 66351144632 is 23644115366.

It is a self number, because there is not a number n which added to its sum of digits gives 66351144632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66351144637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5119544 + ... + 5132487.

It is an arithmetic number, because the mean of its divisors is an integer number (7785136800).

Almost surely, 2^66351144632 is an apocalyptic number.

It is an amenable number.

66351144632 is a deficient number, since it is larger than the sum of its proper divisors (58211044168).

66351144632 is a wasteful number, since it uses less digits than its factorization.

66351144632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10252846 (or 10252842 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

Adding to 66351144632 its reverse (23644115366), we get a palindrome (89995259998).

The spelling of 66351144632 in words is "sixty-six billion, three hundred fifty-one million, one hundred forty-four thousand, six hundred thirty-two".