2655616709 has 2 divisors, whose sum is σ = 2655616710. Its totient is φ = 2655616708.

The previous prime is 2655616697. The next prime is 2655616741. The reversal of 2655616709 is 9076165562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2633947684 + 21669025 = 51322^2 + 4655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2655616709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2655616759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327808354 + 1327808355.

It is an arithmetic number, because the mean of its divisors is an integer number (1327808355).

Almost surely, 2^2655616709 is an apocalyptic number.

It is an amenable number.

2655616709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2655616709 is an equidigital number, since it uses as much as digits as its factorization.

2655616709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 2655616709 is about 51532.6761288408. The cubic root of 2655616709 is about 1384.8044937711.

The spelling of 2655616709 in words is "two billion, six hundred fifty-five million, six hundred sixteen thousand, seven hundred nine".