66051023243 has 4 divisors (see below), whose sum is σ = 66052907640. Its totient is φ = 66049138848.

The previous prime is 66051023231. The next prime is 66051023249. The reversal of 66051023243 is 34232015066.

66051023243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66051023243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66051023249) 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, 888605 + ... + 960062.

It is an arithmetic number, because the mean of its divisors is an integer number (16513226910).

Almost surely, 2^66051023243 is an apocalyptic number.

66051023243 is a deficient number, since it is larger than the sum of its proper divisors (1884397).

66051023243 is a wasteful number, since it uses less digits than its factorization.

66051023243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884396.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 66051023243 in words is "sixty-six billion, fifty-one million, twenty-three thousand, two hundred forty-three".