66434214455 has 24 divisors (see below), whose sum is σ = 93207552768. Its totient is φ = 45323613888.

The previous prime is 66434214443. The next prime is 66434214499. The reversal of 66434214455 is 55441243466.

It is not a de Polignac number, because 66434214455 - 2⁸ = 66434214199 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 639959 + ... + 736488.

It is an arithmetic number, because the mean of its divisors is an integer number (3883648032).

Almost surely, 2^66434214455 is an apocalyptic number.

66434214455 is a deficient number, since it is larger than the sum of its proper divisors (26773338313).

66434214455 is a wasteful number, since it uses less digits than its factorization.

66434214455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376663 (or 1376656 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

The spelling of 66434214455 in words is "sixty-six billion, four hundred thirty-four million, two hundred fourteen thousand, four hundred fifty-five".