66668134080 has 56 divisors (see below), whose sum is σ = 211671328752. Its totient is φ = 17778168832.

The previous prime is 66668134079. The next prime is 66668134081. The reversal of 66668134080 is 8043186666.

It is an interprime number because it is at equal distance from previous prime (66668134079) and next prime (66668134081).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (66668134081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34722027 + ... + 34723946.

Almost surely, 2^66668134080 is an apocalyptic number.

66668134080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66668134080 is an abundant number, since it is smaller than the sum of its proper divisors (145003194672).

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

66668134080 is a wasteful number, since it uses less digits than its factorization.

66668134080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69445993 (or 69445983 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 66668134080 in words is "sixty-six billion, six hundred sixty-eight million, one hundred thirty-four thousand, eighty".