260061154437221 has 2 divisors, whose sum is σ = 260061154437222. Its totient is φ = 260061154437220.

The previous prime is 260061154437151. The next prime is 260061154437223. The reversal of 260061154437221 is 122734451160062.

260061154437221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259784282730625 + 276871706596 = 16117825^2 + 526186^2 .

It is a cyclic number.

It is not a de Polignac number, because 260061154437221 - 2¹⁸ = 260061154175077 is a prime.

It is a super-3 number, since 3×260061154437221³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 260061154437223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260061154437223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130030577218610 + 130030577218611.

It is an arithmetic number, because the mean of its divisors is an integer number (130030577218611).

Almost surely, 2^{260061154437221} is an apocalyptic number.

It is an amenable number.

260061154437221 is a deficient number, since it is larger than the sum of its proper divisors (1).

260061154437221 is an equidigital number, since it uses as much as digits as its factorization.

260061154437221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 260061154437221 in words is "two hundred sixty trillion, sixty-one billion, one hundred fifty-four million, four hundred thirty-seven thousand, two hundred twenty-one".