264664453261 has 8 divisors (see below), whose sum is σ = 285485216184. Its totient is φ = 243909684480.

The previous prime is 264664453259. The next prime is 264664453309. The reversal of 264664453261 is 162354466462.

It can be written as a sum of positive squares in 4 ways, for example, as 15498756036 + 249165697225 = 124494^2 + 499165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264664453261 - 2¹ = 264664453259 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 (264664453561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16490200 + ... + 16506241.

It is an arithmetic number, because the mean of its divisors is an integer number (35685652023).

Almost surely, 2^264664453261 is an apocalyptic number.

It is an amenable number.

264664453261 is a deficient number, since it is larger than the sum of its proper divisors (20820762923).

264664453261 is a wasteful number, since it uses less digits than its factorization.

264664453261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32997071.

The product of its digits is 4976640, while the sum is 49.

The spelling of 264664453261 in words is "two hundred sixty-four billion, six hundred sixty-four million, four hundred fifty-three thousand, two hundred sixty-one".