66667366626 has 64 divisors (see below), whose sum is σ = 155520000000. Its totient is φ = 18656853696.

The previous prime is 66667366609. The next prime is 66667366627. The reversal of 66667366626 is 62666376666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 66667366626.

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 31 ways as a sum of consecutive naturals, for example, 1308375 + ... + 1358373.

It is an arithmetic number, because the mean of its divisors is an integer number (2430000000).

Almost surely, 2^66667366626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66667366626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77760000000).

66667366626 is an abundant number, since it is smaller than the sum of its proper divisors (88852633374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66667366626 is a wasteful number, since it uses less digits than its factorization.

66667366626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50663.

The product of its digits is 70543872, while the sum is 60.

The spelling of 66667366626 in words is "sixty-six billion, six hundred sixty-seven million, three hundred sixty-six thousand, six hundred twenty-six".