66241734503 has 4 divisors (see below), whose sum is σ = 75704839440. Its totient is φ = 56778629568.

The previous prime is 66241734473. The next prime is 66241734511. The reversal of 66241734503 is 30543714266.

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

It is a cyclic number.

It is not a de Polignac number, because 66241734503 - 2¹⁰ = 66241733479 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 (66241731503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731552458 + ... + 4731552471.

It is an arithmetic number, because the mean of its divisors is an integer number (18926209860).

Almost surely, 2^66241734503 is an apocalyptic number.

66241734503 is a deficient number, since it is larger than the sum of its proper divisors (9463104937).

66241734503 is an equidigital number, since it uses as much as digits as its factorization.

66241734503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9463104936.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 66241734503 in words is "sixty-six billion, two hundred forty-one million, seven hundred thirty-four thousand, five hundred three".