265243316212436 has 6 divisors (see below), whose sum is σ = 464175803371770. Its totient is φ = 132621658106216.

The previous prime is 265243316212429. The next prime is 265243316212471. The reversal of 265243316212436 is 634212613342562.

It can be written as a sum of positive squares in only one way, i.e., 261558812928400 + 3684503284036 = 16172780^2 + 1919506^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33155414526551 + ... + 33155414526558.

It is an arithmetic number, because the mean of its divisors is an integer number (77362633895295).

Almost surely, 2^{265243316212436} is an apocalyptic number.

It is an amenable number.

265243316212436 is a deficient number, since it is larger than the sum of its proper divisors (198932487159334).

265243316212436 is a wasteful number, since it uses less digits than its factorization.

265243316212436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66310829053113 (or 66310829053111 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 50.

Adding to 265243316212436 its reverse (634212613342562), we get a palindrome (899455929554998).

The spelling of 265243316212436 in words is "two hundred sixty-five trillion, two hundred forty-three billion, three hundred sixteen million, two hundred twelve thousand, four hundred thirty-six".