66667366628 has 12 divisors (see below), whose sum is σ = 116669747712. Its totient is φ = 33333153000.

The previous prime is 66667366627. The next prime is 66667366639. The reversal of 66667366628 is 82666376666.

It is a super-2 number, since 2×66667366628² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 328253 + ... + 491003.

It is an arithmetic number, because the mean of its divisors is an integer number (9722478976).

Almost surely, 2^66667366628 is an apocalyptic number.

It is an amenable number.

66667366628 is a deficient number, since it is larger than the sum of its proper divisors (50002381084).

66667366628 is a wasteful number, since it uses less digits than its factorization.

66667366628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265162 (or 265160 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 62.

The spelling of 66667366628 in words is "sixty-six billion, six hundred sixty-seven million, three hundred sixty-six thousand, six hundred twenty-eight".