265106565541 has 4 divisors (see below), whose sum is σ = 265219523392. Its totient is φ = 264993607692.

The previous prime is 265106565523. The next prime is 265106565547. The reversal of 265106565541 is 145565601562.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145565601562 = 2 ⋅72782800781.

It is a cyclic number.

It is not a de Polignac number, because 265106565541 - 2⁵ = 265106565509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265106565491 and 265106565500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265106565547) 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, 56475405 + ... + 56480098.

It is an arithmetic number, because the mean of its divisors is an integer number (66304880848).

Almost surely, 2^265106565541 is an apocalyptic number.

It is an amenable number.

265106565541 is a deficient number, since it is larger than the sum of its proper divisors (112957851).

265106565541 is a wasteful number, since it uses less digits than its factorization.

265106565541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112957850.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 265106565541 in words is "two hundred sixty-five billion, one hundred six million, five hundred sixty-five thousand, five hundred forty-one".