66151681334 has 8 divisors (see below), whose sum is σ = 103541762160. Its totient is φ = 31637760616.

The previous prime is 66151681327. The next prime is 66151681361. The reversal of 66151681334 is 43318615166.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719039969 + ... + 719040060.

It is an arithmetic number, because the mean of its divisors is an integer number (12942720270).

Almost surely, 2^66151681334 is an apocalyptic number.

66151681334 is a deficient number, since it is larger than the sum of its proper divisors (37390080826).

66151681334 is a wasteful number, since it uses less digits than its factorization.

66151681334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438080054.

The product of its digits is 311040, while the sum is 44.

The spelling of 66151681334 in words is "sixty-six billion, one hundred fifty-one million, six hundred eighty-one thousand, three hundred thirty-four".