261060423541 has 2 divisors, whose sum is σ = 261060423542. Its totient is φ = 261060423540.

The previous prime is 261060423539. The next prime is 261060423553. The reversal of 261060423541 is 145324060162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136360332900 + 124700090641 = 369270^2 + 353129^2 .

It is a cyclic number.

It is not a de Polignac number, because 261060423541 - 2¹ = 261060423539 is a prime.

Together with 261060423539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 261060423497 and 261060423506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261060423511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130530211770 + 130530211771.

It is an arithmetic number, because the mean of its divisors is an integer number (130530211771).

Almost surely, 2^261060423541 is an apocalyptic number.

It is an amenable number.

261060423541 is a deficient number, since it is larger than the sum of its proper divisors (1).

261060423541 is an equidigital number, since it uses as much as digits as its factorization.

261060423541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 261060423541 in words is "two hundred sixty-one billion, sixty million, four hundred twenty-three thousand, five hundred forty-one".