66344914901 has 8 divisors (see below), whose sum is σ = 70307567424. Its totient is φ = 62388930240.

The previous prime is 66344914879. The next prime is 66344914921. The reversal of 66344914901 is 10941944366.

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 66344914901 - 2²⁶ = 66277806037 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 (66344914921) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1646465 + ... + 1686278.

It is an arithmetic number, because the mean of its divisors is an integer number (8788445928).

Almost surely, 2^66344914901 is an apocalyptic number.

It is an amenable number.

66344914901 is a deficient number, since it is larger than the sum of its proper divisors (3962652523).

66344914901 is a wasteful number, since it uses less digits than its factorization.

66344914901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333931.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 66344914901 in words is "sixty-six billion, three hundred forty-four million, nine hundred fourteen thousand, nine hundred one".