2261605330277 has 2 divisors, whose sum is σ = 2261605330278. Its totient is φ = 2261605330276.

The previous prime is 2261605330273. The next prime is 2261605330363. The reversal of 2261605330277 is 7720335061622.

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., 2043853373956 + 217751956321 = 1429634^2 + 466639^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261605330277 - 2² = 2261605330273 is a prime.

It is a super-2 number, since 2×2261605330277² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261605330273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130802665138 + 1130802665139.

It is an arithmetic number, because the mean of its divisors is an integer number (1130802665139).

Almost surely, 2^{2261605330277} is an apocalyptic number.

It is an amenable number.

2261605330277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261605330277 is an equidigital number, since it uses as much as digits as its factorization.

2261605330277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 2261605330277 in words is "two trillion, two hundred sixty-one billion, six hundred five million, three hundred thirty thousand, two hundred seventy-seven".