264538068213 has 4 divisors (see below), whose sum is σ = 352717424288. Its totient is φ = 176358712140.

The previous prime is 264538068209. The next prime is 264538068233. The reversal of 264538068213 is 312860835462.

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.

It is not a de Polignac number, because 264538068213 - 2² = 264538068209 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 (264538068233) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44089678033 + ... + 44089678038.

It is an arithmetic number, because the mean of its divisors is an integer number (88179356072).

Almost surely, 2^264538068213 is an apocalyptic number.

It is an amenable number.

264538068213 is a deficient number, since it is larger than the sum of its proper divisors (88179356075).

264538068213 is an equidigital number, since it uses as much as digits as its factorization.

264538068213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88179356074.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 264538068213 in words is "two hundred sixty-four billion, five hundred thirty-eight million, sixty-eight thousand, two hundred thirteen".