2616055681 has 2 divisors, whose sum is σ = 2616055682. Its totient is φ = 2616055680.

The previous prime is 2616055649. The next prime is 2616055703. The reversal of 2616055681 is 1865506162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2601918081 + 14137600 = 51009^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2616055681 - 2⁵ = 2616055649 is a prime.

It is a super-2 number, since 2×2616055681² = 13687494652184747522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2616055781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1308027840 + 1308027841.

It is an arithmetic number, because the mean of its divisors is an integer number (1308027841).

Almost surely, 2^2616055681 is an apocalyptic number.

It is an amenable number.

2616055681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616055681 is an equidigital number, since it uses as much as digits as its factorization.

2616055681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 2616055681 is about 51147.3917321304. The cubic root of 2616055681 is about 1377.8935308212.

The spelling of 2616055681 in words is "two billion, six hundred sixteen million, fifty-five thousand, six hundred eighty-one".