260111540165 has 4 divisors (see below), whose sum is σ = 312133848204. Its totient is φ = 208089232128.

The previous prime is 260111540153. The next prime is 260111540167. The reversal of 260111540165 is 561045111062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96279263521 + 163832276644 = 310289^2 + 404762^2 .

It is a cyclic number.

It is not a de Polignac number, because 260111540165 - 2²⁸ = 259843104709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260111540167) 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, 26011154012 + ... + 26011154021.

It is an arithmetic number, because the mean of its divisors is an integer number (78033462051).

Almost surely, 2^260111540165 is an apocalyptic number.

It is an amenable number.

260111540165 is a deficient number, since it is larger than the sum of its proper divisors (52022308039).

260111540165 is an equidigital number, since it uses as much as digits as its factorization.

260111540165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52022308038.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 260111540165 in words is "two hundred sixty billion, one hundred eleven million, five hundred forty thousand, one hundred sixty-five".