66212455063 has 8 divisors (see below), whose sum is σ = 67359657456. Its totient is φ = 65067244800.

The previous prime is 66212455051. The next prime is 66212455093. The reversal of 66212455063 is 36055421266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66212455063 - 2⁵ = 66212455031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66212455003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430906 + ... + 564007.

It is an arithmetic number, because the mean of its divisors is an integer number (8419957182).

Almost surely, 2^66212455063 is an apocalyptic number.

66212455063 is a deficient number, since it is larger than the sum of its proper divisors (1147202393).

66212455063 is a wasteful number, since it uses less digits than its factorization.

66212455063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996065.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 66212455063 in words is "sixty-six billion, two hundred twelve million, four hundred fifty-five thousand, sixty-three".