66667366667 has 8 divisors (see below), whose sum is σ = 72736145472. Its totient is φ = 60599939400.

The previous prime is 66667366639. The next prime is 66667366681. The reversal of 66667366667 is 76666376666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-66667366667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66667366627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233333 + ... + 433334.

It is an arithmetic number, because the mean of its divisors is an integer number (9092018184).

Almost surely, 2^66667366667 is an apocalyptic number.

66667366667 is a deficient number, since it is larger than the sum of its proper divisors (6068778805).

66667366667 is a wasteful number, since it uses less digits than its factorization.

66667366667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675769.

The product of its digits is 246903552, while the sum is 65.

Subtracting 66667366667 from its reverse (76666376666), we obtain a palindrome (9999009999).

It can be divided in two parts, 66667 and 366667, that added together give a palindrome (433334).

The spelling of 66667366667 in words is "sixty-six billion, six hundred sixty-seven million, three hundred sixty-six thousand, six hundred sixty-seven".