260597841521 has 2 divisors, whose sum is σ = 260597841522. Its totient is φ = 260597841520.

The previous prime is 260597841487. The next prime is 260597841527. The reversal of 260597841521 is 125148795062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249300490000 + 11297351521 = 499300^2 + 106289^2 .

It is a cyclic number.

It is not a de Polignac number, because 260597841521 - 2¹⁰ = 260597840497 is a prime.

It is a super-2 number, since 2×260597841521² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 260597841521.

It is not a weakly prime, because it can be changed into another prime (260597841527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130298920760 + 130298920761.

It is an arithmetic number, because the mean of its divisors is an integer number (130298920761).

Almost surely, 2^260597841521 is an apocalyptic number.

It is an amenable number.

260597841521 is a deficient number, since it is larger than the sum of its proper divisors (1).

260597841521 is an equidigital number, since it uses as much as digits as its factorization.

260597841521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 260597841521 in words is "two hundred sixty billion, five hundred ninety-seven million, eight hundred forty-one thousand, five hundred twenty-one".