66738170158 has 8 divisors (see below), whose sum is σ = 109207914840. Its totient is φ = 30335531880.

The previous prime is 66738170141. The next prime is 66738170207. The reversal of 66738170158 is 85107183766.

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

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, 1516776573 + ... + 1516776616.

It is an arithmetic number, because the mean of its divisors is an integer number (13650989355).

Almost surely, 2^66738170158 is an apocalyptic number.

66738170158 is a deficient number, since it is larger than the sum of its proper divisors (42469744682).

66738170158 is a wasteful number, since it uses less digits than its factorization.

66738170158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033553202.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 66738170158 in words is "sixty-six billion, seven hundred thirty-eight million, one hundred seventy thousand, one hundred fifty-eight".