2655641309 has 2 divisors, whose sum is σ = 2655641310. Its totient is φ = 2655641308.

The previous prime is 2655641143. The next prime is 2655641311. The reversal of 2655641309 is 9031465562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2563903225 + 91738084 = 50635^2 + 9578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2655641309 is a prime.

Together with 2655641311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2655641369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327820654 + 1327820655.

It is an arithmetic number, because the mean of its divisors is an integer number (1327820655).

Almost surely, 2^2655641309 is an apocalyptic number.

It is an amenable number.

2655641309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2655641309 is an equidigital number, since it uses as much as digits as its factorization.

2655641309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 2655641309 is about 51532.9148117977. The cubic root of 2655641309 is about 1384.8087697503.

The spelling of 2655641309 in words is "two billion, six hundred fifty-five million, six hundred forty-one thousand, three hundred nine".