66111060606053 has 4 divisors (see below), whose sum is σ = 67358439108108. Its totient is φ = 64863682104000.

The previous prime is 66111060606023. The next prime is 66111060606061. The reversal of 66111060606053 is 35060606011166.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59174279320324 + 6936781285729 = 7692482^2 + 2633777^2 .

It is a cyclic number.

It is not a de Polignac number, because 66111060606053 - 2²² = 66111056411749 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66111060606053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66111060606023) 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, 623689250948 + ... + 623689251053.

It is an arithmetic number, because the mean of its divisors is an integer number (16839609777027).

Almost surely, 2^{66111060606053} is an apocalyptic number.

It is an amenable number.

66111060606053 is a deficient number, since it is larger than the sum of its proper divisors (1247378502055).

66111060606053 is a wasteful number, since it uses less digits than its factorization.

66111060606053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247378502054.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 66111060606053 in words is "sixty-six trillion, one hundred eleven billion, sixty million, six hundred six thousand, fifty-three".