66875651877 has 8 divisors (see below), whose sum is σ = 89540622720. Its totient is φ = 44397224480.

The previous prime is 66875651849. The next prime is 66875651903. The reversal of 66875651877 is 77815657866.

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

It is a cyclic number.

It is not a de Polignac number, because 66875651877 - 2¹⁶ = 66875586341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66875651827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46635024 + ... + 46636457.

It is an arithmetic number, because the mean of its divisors is an integer number (11192577840).

Almost surely, 2^66875651877 is an apocalyptic number.

It is an amenable number.

66875651877 is a deficient number, since it is larger than the sum of its proper divisors (22664970843).

66875651877 is a wasteful number, since it uses less digits than its factorization.

66875651877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93271723.

The product of its digits is 118540800, while the sum is 66.

The spelling of 66875651877 in words is "sixty-six billion, eight hundred seventy-five million, six hundred fifty-one thousand, eight hundred seventy-seven".