666555183386 has 16 divisors (see below), whose sum is σ = 1013241023424. Its totient is φ = 328818985824.

The previous prime is 666555183373. The next prime is 666555183389. The reversal of 666555183386 is 683381555666.

It is a super-3 number, since 3×666555183386³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (666555183389) 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, 2578811 + ... + 2825486.

It is an arithmetic number, because the mean of its divisors is an integer number (63327563964).

Almost surely, 2^666555183386 is an apocalyptic number.

666555183386 is a deficient number, since it is larger than the sum of its proper divisors (346685840038).

666555183386 is a wasteful number, since it uses less digits than its factorization.

666555183386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405125.

The product of its digits is 93312000, while the sum is 62.

The spelling of 666555183386 in words is "six hundred sixty-six billion, five hundred fifty-five million, one hundred eighty-three thousand, three hundred eighty-six".