666808000148 has 12 divisors (see below), whose sum is σ = 1166975831700. Its totient is φ = 333386333952.

The previous prime is 666808000147. The next prime is 666808000207. The reversal of 666808000148 is 841000808666.

It can be written as a sum of positive squares in 2 ways, for example, as 348822534544 + 317985465604 = 590612^2 + 563902^2 .

It is a super-2 number, since 2×666808000148² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666808000147) 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, 4331423 + ... + 4482726.

It is an arithmetic number, because the mean of its divisors is an integer number (97247985975).

Almost surely, 2^666808000148 is an apocalyptic number.

It is an amenable number.

666808000148 is a deficient number, since it is larger than the sum of its proper divisors (500167831552).

666808000148 is a wasteful number, since it uses less digits than its factorization.

666808000148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8833066 (or 8833064 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 666808000148 in words is "six hundred sixty-six billion, eight hundred eight million, one hundred forty-eight", and thus it is an aban number.