5811478709 has 2 divisors, whose sum is σ = 5811478710. Its totient is φ = 5811478708.

The previous prime is 5811478697. The next prime is 5811478711. The reversal of 5811478709 is 9078741185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4549097809 + 1262380900 = 67447^2 + 35530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5811478709 is a prime.

Together with 5811478711, 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 (5811478009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2905739354 + 2905739355.

It is an arithmetic number, because the mean of its divisors is an integer number (2905739355).

Almost surely, 2^5811478709 is an apocalyptic number.

It is an amenable number.

5811478709 is a deficient number, since it is larger than the sum of its proper divisors (1).

5811478709 is an equidigital number, since it uses as much as digits as its factorization.

5811478709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 50.

The square root of 5811478709 is about 76233.0552254073. The cubic root of 5811478709 is about 1797.8862749117.

The spelling of 5811478709 in words is "five billion, eight hundred eleven million, four hundred seventy-eight thousand, seven hundred nine".