368352438217261 has 2 divisors, whose sum is σ = 368352438217262. Its totient is φ = 368352438217260.

The previous prime is 368352438217243. The next prime is 368352438217289. The reversal of 368352438217261 is 162712834253863.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275879808736900 + 92472629480361 = 16609630^2 + 9616269^2 .

It is a cyclic number.

It is not a de Polignac number, because 368352438217261 - 2⁵ = 368352438217229 is a prime.

It is a super-2 number, since 2×368352438217261² (a number of 30 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 368352438217261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368352438217661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184176219108630 + 184176219108631.

It is an arithmetic number, because the mean of its divisors is an integer number (184176219108631).

Almost surely, 2^{368352438217261} is an apocalyptic number.

It is an amenable number.

368352438217261 is a deficient number, since it is larger than the sum of its proper divisors (1).

368352438217261 is an equidigital number, since it uses as much as digits as its factorization.

368352438217261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69672960, while the sum is 61.

The spelling of 368352438217261 in words is "three hundred sixty-eight trillion, three hundred fifty-two billion, four hundred thirty-eight million, two hundred seventeen thousand, two hundred sixty-one".