66747746801338 has 8 divisors (see below), whose sum is σ = 101531783867040. Its totient is φ = 32903818845660.

The previous prime is 66747746801317. The next prime is 66747746801371. The reversal of 66747746801338 is 83310864774766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235027277328 + ... + 235027277611.

It is an arithmetic number, because the mean of its divisors is an integer number (12691472983380).

Almost surely, 2^{66747746801338} is an apocalyptic number.

66747746801338 is a deficient number, since it is larger than the sum of its proper divisors (34784037065702).

66747746801338 is a wasteful number, since it uses less digits than its factorization.

66747746801338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470054555012.

The product of its (nonzero) digits is 682795008, while the sum is 70.

The spelling of 66747746801338 in words is "sixty-six trillion, seven hundred forty-seven billion, seven hundred forty-six million, eight hundred one thousand, three hundred thirty-eight".