66693211095 has 32 divisors (see below), whose sum is σ = 128371898880. Its totient is φ = 28883675520.

The previous prime is 66693211073. The next prime is 66693211097. The reversal of 66693211095 is 59011239666.

It is a happy number.

It is not a de Polignac number, because 66693211095 - 2⁶ = 66693211031 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66693211097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16713096 + ... + 16717085.

It is an arithmetic number, because the mean of its divisors is an integer number (4011621840).

Almost surely, 2^66693211095 is an apocalyptic number.

66693211095 is a deficient number, since it is larger than the sum of its proper divisors (61678687785).

66693211095 is a wasteful number, since it uses less digits than its factorization.

66693211095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33430215.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 66693211095 in words is "sixty-six billion, six hundred ninety-three million, two hundred eleven thousand, ninety-five".