66672618111 has 24 divisors (see below), whose sum is σ = 105162941520. Its totient is φ = 40368009600.

The previous prime is 66672618071. The next prime is 66672618137. The reversal of 66672618111 is 11181627666.

It is not a de Polignac number, because 66672618111 - 2¹³ = 66672609919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66672618191) 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, 228726 + ... + 430883.

It is an arithmetic number, because the mean of its divisors is an integer number (4381789230).

Almost surely, 2^66672618111 is an apocalyptic number.

66672618111 is a deficient number, since it is larger than the sum of its proper divisors (38490323409).

66672618111 is a wasteful number, since it uses less digits than its factorization.

66672618111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660647 (or 660644 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 66672618111 in words is "sixty-six billion, six hundred seventy-two million, six hundred eighteen thousand, one hundred eleven".