66111277601286 has 96 divisors (see below), whose sum is σ = 148068565671936. Its totient is φ = 21296411136000.

The previous prime is 66111277601267. The next prime is 66111277601309. The reversal of 66111277601286 is 68210677211166.

66111277601286 is a `hidden beast` number, since 6 + 6 + 1 + 1 + 1 + 2 + 7 + 7 + 601 + 28 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1510161030 + ... + 1510204806.

It is an arithmetic number, because the mean of its divisors is an integer number (1542380892416).

Almost surely, 2^{66111277601286} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66111277601286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74034282835968).

66111277601286 is an abundant number, since it is smaller than the sum of its proper divisors (81957288070650).

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

66111277601286 is a wasteful number, since it uses less digits than its factorization.

66111277601286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47538 (or 47535 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 66111277601286 in words is "sixty-six trillion, one hundred eleven billion, two hundred seventy-seven million, six hundred one thousand, two hundred eighty-six".