66148316918 has 16 divisors (see below), whose sum is σ = 100857857184. Its totient is φ = 32529125760.

The previous prime is 66148316909. The next prime is 66148316921. The reversal of 66148316918 is 81961384166.

It is a self number, because there is not a number n which added to its sum of digits gives 66148316918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389271 + ... + 2416797.

It is an arithmetic number, because the mean of its divisors is an integer number (6303616074).

Almost surely, 2^66148316918 is an apocalyptic number.

66148316918 is a deficient number, since it is larger than the sum of its proper divisors (34709540266).

66148316918 is a wasteful number, since it uses less digits than its factorization.

66148316918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47287.

The product of its digits is 1492992, while the sum is 53.

The spelling of 66148316918 in words is "sixty-six billion, one hundred forty-eight million, three hundred sixteen thousand, nine hundred eighteen".