66350690011 has 4 divisors (see below), whose sum is σ = 66351213792. Its totient is φ = 66350166232.

The previous prime is 66350689991. The next prime is 66350690093. The reversal of 66350690011 is 11009605366.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66350690011 - 2²⁵ = 66317135579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66350690711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60021 + ... + 369193.

It is an arithmetic number, because the mean of its divisors is an integer number (16587803448).

Almost surely, 2^66350690011 is an apocalyptic number.

66350690011 is a deficient number, since it is larger than the sum of its proper divisors (523781).

66350690011 is a wasteful number, since it uses less digits than its factorization.

66350690011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523780.

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 66350690011 in words is "sixty-six billion, three hundred fifty million, six hundred ninety thousand, eleven".