66164134675 has 12 divisors (see below), whose sum is σ = 84690093376. Its totient is φ = 51223845600.

The previous prime is 66164134643. The next prime is 66164134697. The reversal of 66164134675 is 57643146166.

It is not a de Polignac number, because 66164134675 - 2⁵ = 66164134643 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 42685764 + ... + 42687313.

Almost surely, 2^66164134675 is an apocalyptic number.

66164134675 is a deficient number, since it is larger than the sum of its proper divisors (18525958701).

66164134675 is a wasteful number, since it uses less digits than its factorization.

66164134675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85373118 (or 85373113 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

The spelling of 66164134675 in words is "sixty-six billion, one hundred sixty-four million, one hundred thirty-four thousand, six hundred seventy-five".