265648384513 has 4 divisors (see below), whose sum is σ = 266907381808. Its totient is φ = 264389387220.

The previous prime is 265648384471. The next prime is 265648384517. The reversal of 265648384513 is 315483846562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265648384513 - 2¹³ = 265648376321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265648384517) 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, 629498331 + ... + 629498752.

It is an arithmetic number, because the mean of its divisors is an integer number (66726845452).

Almost surely, 2^265648384513 is an apocalyptic number.

It is an amenable number.

265648384513 is a deficient number, since it is larger than the sum of its proper divisors (1258997295).

265648384513 is a wasteful number, since it uses less digits than its factorization.

265648384513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258997294.

The product of its digits is 16588800, while the sum is 55.

The spelling of 265648384513 in words is "two hundred sixty-five billion, six hundred forty-eight million, three hundred eighty-four thousand, five hundred thirteen".