66674148080 has 40 divisors (see below), whose sum is σ = 156552238944. Its totient is φ = 26405600000.

The previous prime is 66674148071. The next prime is 66674148089. The reversal of 66674148080 is 8084147666.

It is an interprime number because it is at equal distance from previous prime (66674148071) and next prime (66674148089).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66674148089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4117796 + ... + 4133955.

Almost surely, 2^66674148080 is an apocalyptic number.

It is an amenable number.

66674148080 is an abundant number, since it is smaller than the sum of its proper divisors (89878090864).

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

66674148080 is a wasteful number, since it uses less digits than its factorization.

66674148080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8251865 (or 8251859 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 66674148080 in words is "sixty-six billion, six hundred seventy-four million, one hundred forty-eight thousand, eighty".