666674134148 has 18 divisors (see below), whose sum is σ = 1282383511038. Its totient is φ = 303033697120.

The previous prime is 666674134121. The next prime is 666674134153. The reversal of 666674134148 is 841431476666.

It can be written as a sum of positive squares in only one way, i.e., 414828741184 + 251845392964 = 644072^2 + 501842^2 .

It is a super-2 number, since 2×666674134148² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666674134093 and 666674134102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 688712465 + ... + 688713432.

It is an arithmetic number, because the mean of its divisors is an integer number (71243528391).

Almost surely, 2^666674134148 is an apocalyptic number.

It is an amenable number.

666674134148 is a deficient number, since it is larger than the sum of its proper divisors (615709376890).

666674134148 is a wasteful number, since it uses less digits than its factorization.

666674134148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377425923 (or 1377425910 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 56.

The spelling of 666674134148 in words is "six hundred sixty-six billion, six hundred seventy-four million, one hundred thirty-four thousand, one hundred forty-eight".