260690411521 has 4 divisors (see below), whose sum is σ = 260718418944. Its totient is φ = 260662404100.

The previous prime is 260690411519. The next prime is 260690411543. The reversal of 260690411521 is 125114096062.

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 260690411521 - 2¹ = 260690411519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260690411621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13989745 + ... + 14008366.

It is an arithmetic number, because the mean of its divisors is an integer number (65179604736).

Almost surely, 2^260690411521 is an apocalyptic number.

It is an amenable number.

260690411521 is a deficient number, since it is larger than the sum of its proper divisors (28007423).

260690411521 is an equidigital number, since it uses as much as digits as its factorization.

260690411521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28007422.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 260690411521 in words is "two hundred sixty billion, six hundred ninety million, four hundred eleven thousand, five hundred twenty-one".