66934543101 has 16 divisors (see below), whose sum is σ = 89912446848. Its totient is φ = 44291072000.

The previous prime is 66934543073. The next prime is 66934543171. The reversal of 66934543101 is 10134543966.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66934543101 - 2⁵ = 66934543069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66934543171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62176 + ... + 371126.

It is an arithmetic number, because the mean of its divisors is an integer number (5619527928).

Almost surely, 2^66934543101 is an apocalyptic number.

It is an amenable number.

66934543101 is a deficient number, since it is larger than the sum of its proper divisors (22977903747).

66934543101 is a wasteful number, since it uses less digits than its factorization.

66934543101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309492.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 66934543101 in words is "sixty-six billion, nine hundred thirty-four million, five hundred forty-three thousand, one hundred one".