264243897352 has 32 divisors (see below), whose sum is σ = 497149637400. Its totient is φ = 131670849024.

The previous prime is 264243897299. The next prime is 264243897353. The reversal of 264243897352 is 253798342462.

It can be written as a sum of positive squares in 4 ways, for example, as 170359260516 + 93884636836 = 412746^2 + 306406^2 .

It is a super-2 number, since 2×264243897352² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 264243897293 and 264243897302.

It is not an unprimeable number, because it can be changed into a prime (264243897353) 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, 15508774 + ... + 15525802.

Almost surely, 2^264243897352 is an apocalyptic number.

It is an amenable number.

264243897352 is a deficient number, since it is larger than the sum of its proper divisors (232905740048).

264243897352 is a wasteful number, since it uses less digits than its factorization.

264243897352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23545 (or 23541 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 55.

The spelling of 264243897352 in words is "two hundred sixty-four billion, two hundred forty-three million, eight hundred ninety-seven thousand, three hundred fifty-two".