2601810405281 has 2 divisors, whose sum is σ = 2601810405282. Its totient is φ = 2601810405280.

The previous prime is 2601810405203. The next prime is 2601810405323. The reversal of 2601810405281 is 1825040181062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2145126390625 + 456684014656 = 1464625^2 + 675784^2 .

It is a cyclic number.

It is not a de Polignac number, because 2601810405281 - 2¹⁴ = 2601810388897 is a prime.

It is a super-2 number, since 2×2601810405281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2601810405881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1300905202640 + 1300905202641.

It is an arithmetic number, because the mean of its divisors is an integer number (1300905202641).

Almost surely, 2^{2601810405281} is an apocalyptic number.

It is an amenable number.

2601810405281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2601810405281 is an equidigital number, since it uses as much as digits as its factorization.

2601810405281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 38.

The spelling of 2601810405281 in words is "two trillion, six hundred one billion, eight hundred ten million, four hundred five thousand, two hundred eighty-one".