260290808865 has 12 divisors (see below), whose sum is σ = 451170735444. Its totient is φ = 138821764704.

The previous prime is 260290808849. The next prime is 260290808881. The reversal of 260290808865 is 568808092062.

It is an interprime number because it is at equal distance from previous prime (260290808849) and next prime (260290808881).

It can be written as a sum of positive squares in 2 ways, for example, as 168487262784 + 91803546081 = 410472^2 + 302991^2 .

It is not a de Polignac number, because 260290808865 - 2⁴ = 260290808849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2892120054 + ... + 2892120143.

It is an arithmetic number, because the mean of its divisors is an integer number (37597561287).

Almost surely, 2^260290808865 is an apocalyptic number.

It is an amenable number.

260290808865 is a deficient number, since it is larger than the sum of its proper divisors (190879926579).

260290808865 is a wasteful number, since it uses less digits than its factorization.

260290808865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784240208 (or 5784240205 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 260290808865 in words is "two hundred sixty billion, two hundred ninety million, eight hundred eight thousand, eight hundred sixty-five".