2667659081 has 2 divisors, whose sum is σ = 2667659082. Its totient is φ = 2667659080.

The previous prime is 2667659077. The next prime is 2667659087. The reversal of 2667659081 is 1809567662.

2667659081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1963287481 + 704371600 = 44309^2 + 26540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2667659081 - 2² = 2667659077 is a prime.

It is a super-2 number, since 2×2667659081² = 14232809944883529122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2667659087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333829540 + 1333829541.

It is an arithmetic number, because the mean of its divisors is an integer number (1333829541).

Almost surely, 2^2667659081 is an apocalyptic number.

It is an amenable number.

2667659081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667659081 is an equidigital number, since it uses as much as digits as its factorization.

2667659081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 2667659081 is about 51649.3860660512. The cubic root of 2667659081 is about 1386.8945527823.

The spelling of 2667659081 in words is "two billion, six hundred sixty-seven million, six hundred fifty-nine thousand, eighty-one".