66674528880080 has 160 divisors (see below), whose sum is σ = 175051637049600. Its totient is φ = 23394603008000.

The previous prime is 66674528880077. The next prime is 66674528880137. The reversal of 66674528880080 is 8008882547666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40041581 + ... + 41673459.

It is an arithmetic number, because the mean of its divisors is an integer number (1094072731560).

Almost surely, 2^{66674528880080} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66674528880080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87525818524800).

66674528880080 is an abundant number, since it is smaller than the sum of its proper divisors (108377108169520).

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

66674528880080 is a wasteful number, since it uses less digits than its factorization.

66674528880080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633533 (or 1633527 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 68.

The spelling of 66674528880080 in words is "sixty-six trillion, six hundred seventy-four billion, five hundred twenty-eight million, eight hundred eighty thousand, eighty".