265342663605 has 16 divisors (see below), whose sum is σ = 424587640320. Its totient is φ = 141502961088.

The previous prime is 265342663601. The next prime is 265342663613. The reversal of 265342663605 is 506366243562.

It is a happy number.

It is not a de Polignac number, because 265342663605 - 2² = 265342663601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265342663601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652165 + ... + 977754.

It is an arithmetic number, because the mean of its divisors is an integer number (26536727520).

Almost surely, 2^265342663605 is an apocalyptic number.

It is an amenable number.

265342663605 is a deficient number, since it is larger than the sum of its proper divisors (159244976715).

265342663605 is a wasteful number, since it uses less digits than its factorization.

265342663605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640780.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 265342663605 in words is "two hundred sixty-five billion, three hundred forty-two million, six hundred sixty-three thousand, six hundred five".