66011656110620 has 96 divisors (see below), whose sum is σ = 151525964217600. Its totient is φ = 23956765056000.

The previous prime is 66011656110619. The next prime is 66011656110683. The reversal of 66011656110620 is 2601165611066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381353651 + ... + 381526709.

It is an arithmetic number, because the mean of its divisors is an integer number (1578395460600).

Almost surely, 2^{66011656110620} is an apocalyptic number.

It is an amenable number.

66011656110620 is an abundant number, since it is smaller than the sum of its proper divisors (85514308106980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66011656110620 is a wasteful number, since it uses less digits than its factorization.

66011656110620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176499 (or 176497 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 66011656110620 in words is "sixty-six trillion, eleven billion, six hundred fifty-six million, one hundred ten thousand, six hundred twenty".