2665261097 has 2 divisors, whose sum is σ = 2665261098. Its totient is φ = 2665261096.

The previous prime is 2665261073. The next prime is 2665261121. The reversal of 2665261097 is 7901625662.

2665261097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2665261073) and next prime (2665261121).

It can be written as a sum of positive squares in only one way, i.e., 2509909801 + 155351296 = 50099^2 + 12464^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665261097 - 2⁶ = 2665261033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2665261397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332630548 + 1332630549.

It is an arithmetic number, because the mean of its divisors is an integer number (1332630549).

Almost surely, 2^2665261097 is an apocalyptic number.

It is an amenable number.

2665261097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665261097 is an equidigital number, since it uses as much as digits as its factorization.

2665261097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2665261097 is about 51626.1667858461. The cubic root of 2665261097 is about 1386.4788639880.

The spelling of 2665261097 in words is "two billion, six hundred sixty-five million, two hundred sixty-one thousand, ninety-seven".