66360011243 has 4 divisors (see below), whose sum is σ = 67350459240. Its totient is φ = 65369563248.

The previous prime is 66360011233. The next prime is 66360011269. The reversal of 66360011243 is 34211006366.

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 66360011243 - 2¹⁰ = 66360010219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66360011233) 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, 495223898 + ... + 495224031.

It is an arithmetic number, because the mean of its divisors is an integer number (16837614810).

Almost surely, 2^66360011243 is an apocalyptic number.

66360011243 is a deficient number, since it is larger than the sum of its proper divisors (990447997).

66360011243 is an equidigital number, since it uses as much as digits as its factorization.

66360011243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990447996.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 66360011243 in words is "sixty-six billion, three hundred sixty million, eleven thousand, two hundred forty-three".