66873554903 has 8 divisors (see below), whose sum is σ = 66948954240. Its totient is φ = 66798201600.

The previous prime is 66873554863. The next prime is 66873554921. The reversal of 66873554903 is 30945537866.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66873554903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66873554933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3457283 + ... + 3476571.

It is an arithmetic number, because the mean of its divisors is an integer number (8368619280).

Almost surely, 2^66873554903 is an apocalyptic number.

66873554903 is a deficient number, since it is larger than the sum of its proper divisors (75399337).

66873554903 is a wasteful number, since it uses less digits than its factorization.

66873554903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23017.

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 66873554903 in words is "sixty-six billion, eight hundred seventy-three million, five hundred fifty-four thousand, nine hundred three".