66875805541 has 8 divisors (see below), whose sum is σ = 71549612000. Its totient is φ = 62317401840.

The previous prime is 66875805539. The next prime is 66875805559. The reversal of 66875805541 is 14550857866.

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 66875805541 - 2¹ = 66875805539 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 (66875805041) 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, 28849491 + ... + 28851808.

It is an arithmetic number, because the mean of its divisors is an integer number (8943701500).

Almost surely, 2^66875805541 is an apocalyptic number.

66875805541 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

66875805541 is a deficient number, since it is larger than the sum of its proper divisors (4673806459).

66875805541 is a wasteful number, since it uses less digits than its factorization.

66875805541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57701379.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 66875805541 in words is "sixty-six billion, eight hundred seventy-five million, eight hundred five thousand, five hundred forty-one".