66411356012111 has 8 divisors (see below), whose sum is σ = 72934985250000. Its totient is φ = 59968765647040.

The previous prime is 66411356012083. The next prime is 66411356012119. The reversal of 66411356012111 is 11121065311466.

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 66411356012111 - 2¹⁸ = 66411355749967 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 (66411356012119) 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, 20259716486 + ... + 20259719763.

It is an arithmetic number, because the mean of its divisors is an integer number (9116873156250).

Almost surely, 2^{66411356012111} is an apocalyptic number.

66411356012111 is a deficient number, since it is larger than the sum of its proper divisors (6523629237889).

66411356012111 is a wasteful number, since it uses less digits than its factorization.

66411356012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40519436409.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 66411356012111 in words is "sixty-six trillion, four hundred eleven billion, three hundred fifty-six million, twelve thousand, one hundred eleven".