264312531664 has 20 divisors (see below), whose sum is σ = 512705914756. Its totient is φ = 132001327872.

The previous prime is 264312531661. The next prime is 264312531773. The reversal of 264312531664 is 466135213462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 147548174400 + 116764357264 = 384120^2 + 341708^2 .

It is a super-2 number, since 2×264312531664² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 264312531664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264312531661) 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, 9669549 + ... + 9696844.

Almost surely, 2^264312531664 is an apocalyptic number.

It is an amenable number.

264312531664 is a deficient number, since it is larger than the sum of its proper divisors (248393383092).

264312531664 is a wasteful number, since it uses less digits than its factorization.

264312531664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19367254 (or 19367248 counting only the distinct ones).

The product of its digits is 622080, while the sum is 43.

The spelling of 264312531664 in words is "two hundred sixty-four billion, three hundred twelve million, five hundred thirty-one thousand, six hundred sixty-four".