66439226113 has 16 divisors (see below), whose sum is σ = 74030100480. Its totient is φ = 59203400256.

The previous prime is 66439226111. The next prime is 66439226123. The reversal of 66439226113 is 31162293466.

It is not a de Polignac number, because 66439226113 - 2¹ = 66439226111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66439226113.

It is not an unprimeable number, because it can be changed into a prime (66439226111) 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, 2856256 + ... + 2879422.

It is an arithmetic number, because the mean of its divisors is an integer number (4626881280).

Almost surely, 2^66439226113 is an apocalyptic number.

It is an amenable number.

66439226113 is a deficient number, since it is larger than the sum of its proper divisors (7590874367).

66439226113 is a wasteful number, since it uses less digits than its factorization.

66439226113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30816.

The product of its digits is 279936, while the sum is 43.

The spelling of 66439226113 in words is "sixty-six billion, four hundred thirty-nine million, two hundred twenty-six thousand, one hundred thirteen".