66266245000 has 40 divisors (see below), whose sum is σ = 155261823750. Its totient is φ = 26506496000.

The previous prime is 66266244997. The next prime is 66266245009. The reversal of 66266245000 is 54266266.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 477072964 + 65789172036 = 21842^2 + 256494^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (66266245009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6621625 + ... + 6631624.

Almost surely, 2^66266245000 is an apocalyptic number.

It is an amenable number.

66266245000 is an abundant number, since it is smaller than the sum of its proper divisors (88995578750).

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

66266245000 is a wasteful number, since it uses less digits than its factorization.

66266245000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13253275 (or 13253256 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 66266245000 in words is "sixty-six billion, two hundred sixty-six million, two hundred forty-five thousand".