6716115409 has 2 divisors, whose sum is σ = 6716115410. Its totient is φ = 6716115408.

The previous prime is 6716115397. The next prime is 6716115463. The reversal of 6716115409 is 9045116176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3496120384 + 3219995025 = 59128^2 + 56745^2 .

It is a cyclic number.

It is not a de Polignac number, because 6716115409 - 2⁵ = 6716115377 is a prime.

It is not a weakly prime, because it can be changed into another prime (6716115209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3358057704 + 3358057705.

It is an arithmetic number, because the mean of its divisors is an integer number (3358057705).

Almost surely, 2^6716115409 is an apocalyptic number.

It is an amenable number.

6716115409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6716115409 is an equidigital number, since it uses as much as digits as its factorization.

6716115409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 6716115409 is about 81951.9091235830. The cubic root of 6716115409 is about 1886.7139047462.

The spelling of 6716115409 in words is "six billion, seven hundred sixteen million, one hundred fifteen thousand, four hundred nine".