664477146641142 has 12 divisors (see below), whose sum is σ = 1439700484389180. Its totient is φ = 221492382213708.

The previous prime is 664477146641101. The next prime is 664477146641153. The reversal of 664477146641142 is 241146641774466.

It is a happy number.

664477146641142 is a `hidden beast` number, since 6 + 6 + 4 + 4 + 77 + 146 + 6 + 411 + 4 + 2 = 666.

664477146641142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 664477146641142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18457698517792 + ... + 18457698517827.

It is an arithmetic number, because the mean of its divisors is an integer number (119975040365765).

Almost surely, 2^{664477146641142} is an apocalyptic number.

664477146641142 is an abundant number, since it is smaller than the sum of its proper divisors (775223337748038).

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

664477146641142 is a wasteful number, since it uses less digits than its factorization.

664477146641142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36915397035627 (or 36915397035624 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 63.

The spelling of 664477146641142 in words is "six hundred sixty-four trillion, four hundred seventy-seven billion, one hundred forty-six million, six hundred forty-one thousand, one hundred forty-two".