66105115060000 has 120 divisors (see below), whose sum is σ = 172194881983740. Its totient is φ = 24886631424000.

The previous prime is 66105115059979. The next prime is 66105115060001. The reversal of 66105115060000 is 6051150166.

It can be written as a sum of positive squares in 10 ways, for example, as 7217970010384 + 58887145049616 = 2686628^2 + 7673796^2 .

It is not an unprimeable number, because it can be changed into a prime (66105115060001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96873405 + ... + 97553404.

Almost surely, 2^{66105115060000} is an apocalyptic number.

It is an amenable number.

66105115060000 is an abundant number, since it is smaller than the sum of its proper divisors (106089766923740).

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

66105115060000 is a wasteful number, since it uses less digits than its factorization.

66105115060000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194426856 (or 194426833 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 66105115060000 in words is "sixty-six trillion, one hundred five billion, one hundred fifteen million, sixty thousand".