66166123060 has 48 divisors (see below), whose sum is σ = 141324094800. Its totient is φ = 26017689600.

The previous prime is 66166123043. The next prime is 66166123061. The reversal of 66166123060 is 6032166166.

It can be written as a sum of positive squares in 8 ways, for example, as 222964624 + 65943158436 = 14932^2 + 256794^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66166123061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174610 + ... + 403510.

It is an arithmetic number, because the mean of its divisors is an integer number (2944251975).

Almost surely, 2^66166123060 is an apocalyptic number.

It is an amenable number.

66166123060 is an abundant number, since it is smaller than the sum of its proper divisors (75157971740).

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

66166123060 is a wasteful number, since it uses less digits than its factorization.

66166123060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229156 (or 229154 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 66166123060 in words is "sixty-six billion, one hundred sixty-six million, one hundred twenty-three thousand, sixty".