264332065042541 has 4 divisors (see below), whose sum is σ = 268665377584284. Its totient is φ = 259998752500800.

The previous prime is 264332065042469. The next prime is 264332065042579. The reversal of 264332065042541 is 145240560233462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5005198072900 + 259326866969641 = 2237230^2 + 16103629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264332065042541 is a prime.

It is a super-2 number, since 2×264332065042541² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264332065042841) 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, 2166656270780 + ... + 2166656270901.

It is an arithmetic number, because the mean of its divisors is an integer number (67166344396071).

Almost surely, 2^{264332065042541} is an apocalyptic number.

It is an amenable number.

264332065042541 is a deficient number, since it is larger than the sum of its proper divisors (4333312541743).

264332065042541 is an equidigital number, since it uses as much as digits as its factorization.

264332065042541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333312541742.

The product of its (nonzero) digits is 4147200, while the sum is 47.

The spelling of 264332065042541 in words is "two hundred sixty-four trillion, three hundred thirty-two billion, sixty-five million, forty-two thousand, five hundred forty-one".