66234553313 has 4 divisors (see below), whose sum is σ = 66298302720. Its totient is φ = 66170803908.

The previous prime is 66234553303. The next prime is 66234553321. The reversal of 66234553313 is 31335543266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31335543266 = 2 ⋅15667771633.

It is a cyclic number.

It is not a de Polignac number, because 66234553313 - 2⁸ = 66234553057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66234553303) 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, 31873145 + ... + 31875222.

It is an arithmetic number, because the mean of its divisors is an integer number (16574575680).

Almost surely, 2^66234553313 is an apocalyptic number.

It is an amenable number.

66234553313 is a deficient number, since it is larger than the sum of its proper divisors (63749407).

66234553313 is a wasteful number, since it uses less digits than its factorization.

66234553313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63749406.

The product of its digits is 583200, while the sum is 41.

The spelling of 66234553313 in words is "sixty-six billion, two hundred thirty-four million, five hundred fifty-three thousand, three hundred thirteen".