66200740712 has 8 divisors (see below), whose sum is σ = 124126388850. Its totient is φ = 33100370352.

The previous prime is 66200740699. The next prime is 66200740717. The reversal of 66200740712 is 21704700266.

It can be written as a sum of positive squares in only one way, i.e., 66185794756 + 14945956 = 257266^2 + 3866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×66200740712³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66200740717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4137546287 + ... + 4137546302.

Almost surely, 2^66200740712 is an apocalyptic number.

It is an amenable number.

66200740712 is a deficient number, since it is larger than the sum of its proper divisors (57925648138).

66200740712 is a wasteful number, since it uses less digits than its factorization.

66200740712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8275092595 (or 8275092591 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 66200740712 in words is "sixty-six billion, two hundred million, seven hundred forty thousand, seven hundred twelve".