66146862618 has 24 divisors (see below), whose sum is σ = 150861266400. Its totient is φ = 20888482824.

The previous prime is 66146862601. The next prime is 66146862641. The reversal of 66146862618 is 81626864166.

66146862618 is a `hidden beast` number, since 6 + 6 + 1 + 4 + 6 + 8 + 626 + 1 + 8 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96705598 + ... + 96706281.

It is an arithmetic number, because the mean of its divisors is an integer number (6285886100).

Almost surely, 2^66146862618 is an apocalyptic number.

66146862618 is an abundant number, since it is smaller than the sum of its proper divisors (84714403782).

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

66146862618 is a wasteful number, since it uses less digits than its factorization.

66146862618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193411906 (or 193411903 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 66146862618 in words is "sixty-six billion, one hundred forty-six million, eight hundred sixty-two thousand, six hundred eighteen".