66134542201012 has 24 divisors (see below), whose sum is σ = 115903363927176. Its totient is φ = 33019303170048.

The previous prime is 66134542200983. The next prime is 66134542201033. The reversal of 66134542201012 is 21010224543166.

It can be written as a sum of positive squares in 4 ways, for example, as 55082135566756 + 11052406634256 = 7421734^2 + 3324516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33138468 + ... + 35077444.

It is an arithmetic number, because the mean of its divisors is an integer number (4829306830299).

Almost surely, 2^{66134542201012} is an apocalyptic number.

It is an amenable number.

66134542201012 is a deficient number, since it is larger than the sum of its proper divisors (49768821726164).

66134542201012 is a wasteful number, since it uses less digits than its factorization.

66134542201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951347 (or 1951345 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 66134542201012 its reverse (21010224543166), we get a palindrome (87144766744178).

The spelling of 66134542201012 in words is "sixty-six trillion, one hundred thirty-four billion, five hundred forty-two million, two hundred one thousand, twelve".