260997570655 has 16 divisors (see below), whose sum is σ = 329694300000. Its totient is φ = 197800790400.

The previous prime is 260997570637. The next prime is 260997570661. The reversal of 260997570655 is 556075799062.

It is not a de Polignac number, because 260997570655 - 2⁵ = 260997570623 is a prime.

It is a super-3 number, since 3×260997570655³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 260997570593 and 260997570602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3645705 + ... + 3716605.

It is an arithmetic number, because the mean of its divisors is an integer number (20605893750).

Almost surely, 2^260997570655 is an apocalyptic number.

260997570655 is a deficient number, since it is larger than the sum of its proper divisors (68696729345).

260997570655 is a wasteful number, since it uses less digits than its factorization.

260997570655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109674.

The product of its (nonzero) digits is 35721000, while the sum is 61.

The spelling of 260997570655 in words is "two hundred sixty billion, nine hundred ninety-seven million, five hundred seventy thousand, six hundred fifty-five".