66080572738374 has 64 divisors (see below), whose sum is σ = 140716390233600. Its totient is φ = 20615666523648.

The previous prime is 66080572738361. The next prime is 66080572738399. The reversal of 66080572738374 is 47383727508066.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17606647 + ... + 21027485.

It is an arithmetic number, because the mean of its divisors is an integer number (2198693597400).

Almost surely, 2^{66080572738374} is an apocalyptic number.

66080572738374 is an abundant number, since it is smaller than the sum of its proper divisors (74635817495226).

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

66080572738374 is a wasteful number, since it uses less digits than its factorization.

66080572738374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421917.

The product of its (nonzero) digits is 284497920, while the sum is 66.

The spelling of 66080572738374 in words is "sixty-six trillion, eighty billion, five hundred seventy-two million, seven hundred thirty-eight thousand, three hundred seventy-four".