66011606061 has 8 divisors (see below), whose sum is σ = 88027549344. Its totient is φ = 44001700080.

The previous prime is 66011606041. The next prime is 66011606123. The reversal of 66011606061 is 16060611066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66011606061 - 2⁵ = 66011606029 is a prime.

It is a Smith number, since the sum of its digits (33) 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 (66011606041) 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, 1483750 + ... + 1527591.

It is an arithmetic number, because the mean of its divisors is an integer number (11003443668).

Almost surely, 2^66011606061 is an apocalyptic number.

It is an amenable number.

66011606061 is a deficient number, since it is larger than the sum of its proper divisors (22015943283).

66011606061 is a wasteful number, since it uses less digits than its factorization.

66011606061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018651.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 66011606061 in words is "sixty-six billion, eleven million, six hundred six thousand, sixty-one".