66144410212346 has 4 divisors (see below), whose sum is σ = 99216615318522. Its totient is φ = 33072205106172.

The previous prime is 66144410212339. The next prime is 66144410212429. The reversal of 66144410212346 is 64321201444166.

It is a happy number.

66144410212346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50988096954025 + 15156313258321 = 7140595^2 + 3893111^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66144410212297 and 66144410212306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16536102553085 + ... + 16536102553088.

Almost surely, 2^{66144410212346} is an apocalyptic number.

66144410212346 is a deficient number, since it is larger than the sum of its proper divisors (33072205106176).

66144410212346 is a wasteful number, since it uses less digits than its factorization.

66144410212346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33072205106175.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 66144410212346 in words is "sixty-six trillion, one hundred forty-four billion, four hundred ten million, two hundred twelve thousand, three hundred forty-six".