66873554142 has 32 divisors (see below), whose sum is σ = 134002501632. Its totient is φ = 22248661344.

The previous prime is 66873554129. The next prime is 66873554171. The reversal of 66873554142 is 24145537866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8265223 + ... + 8273309.

It is an arithmetic number, because the mean of its divisors is an integer number (4187578176).

Almost surely, 2^66873554142 is an apocalyptic number.

66873554142 is an abundant number, since it is smaller than the sum of its proper divisors (67128947490).

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

66873554142 is a wasteful number, since it uses less digits than its factorization.

66873554142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552.

The product of its digits is 4838400, while the sum is 51.

The spelling of 66873554142 in words is "sixty-six billion, eight hundred seventy-three million, five hundred fifty-four thousand, one hundred forty-two".