264755137067321 has 4 divisors (see below), whose sum is σ = 264755171145444. Its totient is φ = 264755102989200.

The previous prime is 264755137067297. The next prime is 264755137067353. The reversal of 264755137067321 is 123760731557462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 132464561955625 + 132290575111696 = 11509325^2 + 11501764^2 .

It is a cyclic number.

It is not a de Polignac number, because 264755137067321 - 2³⁰ = 264754063325497 is a prime.

It is a super-2 number, since 2×264755137067321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264755137067371) 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, 933851 + ... + 23030031.

It is an arithmetic number, because the mean of its divisors is an integer number (66188792786361).

Almost surely, 2^{264755137067321} is an apocalyptic number.

It is an amenable number.

264755137067321 is a deficient number, since it is larger than the sum of its proper divisors (34078123).

264755137067321 is a wasteful number, since it uses less digits than its factorization.

264755137067321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34078122.

The product of its (nonzero) digits is 44452800, while the sum is 59.

The spelling of 264755137067321 in words is "two hundred sixty-four trillion, seven hundred fifty-five billion, one hundred thirty-seven million, sixty-seven thousand, three hundred twenty-one".