2661134137 has 2 divisors, whose sum is σ = 2661134138. Its totient is φ = 2661134136.

The previous prime is 2661134123. The next prime is 2661134141. The reversal of 2661134137 is 7314311662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797420816 + 863713321 = 42396^2 + 29389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661134137 - 2¹⁵ = 2661101369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2661134837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330567068 + 1330567069.

It is an arithmetic number, because the mean of its divisors is an integer number (1330567069).

Almost surely, 2^2661134137 is an apocalyptic number.

It is an amenable number.

2661134137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661134137 is an equidigital number, since it uses as much as digits as its factorization.

2661134137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 2661134137 is about 51586.1816478018. The cubic root of 2661134137 is about 1385.7628742615.

Adding to 2661134137 its reverse (7314311662), we get a palindrome (9975445799).

The spelling of 2661134137 in words is "two billion, six hundred sixty-one million, one hundred thirty-four thousand, one hundred thirty-seven".