6815044651 has 2 divisors, whose sum is σ = 6815044652. Its totient is φ = 6815044650.

The previous prime is 6815044459. The next prime is 6815044669. The reversal of 6815044651 is 1564405186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6815044651 - 2²¹ = 6812947499 is a prime.

It is not a weakly prime, because it can be changed into another prime (6815044151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3407522325 + 3407522326.

It is an arithmetic number, because the mean of its divisors is an integer number (3407522326).

Almost surely, 2^6815044651 is an apocalyptic number.

6815044651 is a deficient number, since it is larger than the sum of its proper divisors (1).

6815044651 is an equidigital number, since it uses as much as digits as its factorization.

6815044651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 6815044651 is about 82553.2837081603. The cubic root of 6815044651 is about 1895.9326334725.

The spelling of 6815044651 in words is "six billion, eight hundred fifteen million, forty-four thousand, six hundred fifty-one".