66045042196 has 18 divisors (see below), whose sum is σ = 134448836298. Its totient is φ = 28305018000.

The previous prime is 66045042113. The next prime is 66045042251. The reversal of 66045042196 is 69124054066.

66045042196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 62093662596 + 3951379600 = 249186^2 + 62860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168482055 + ... + 168482446.

Almost surely, 2^66045042196 is an apocalyptic number.

It is an amenable number.

66045042196 is an abundant number, since it is smaller than the sum of its proper divisors (68403794102).

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

66045042196 is a wasteful number, since it uses less digits than its factorization.

66045042196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336964519 (or 336964510 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 66045042196 in words is "sixty-six billion, forty-five million, forty-two thousand, one hundred ninety-six".