815266332247 has 2 divisors, whose sum is σ = 815266332248. Its totient is φ = 815266332246.

The previous prime is 815266332229. The next prime is 815266332281. The reversal of 815266332247 is 742233662518.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815266332247 - 2¹⁵ = 815266299479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 815266332247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815266332847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407633166123 + 407633166124.

It is an arithmetic number, because the mean of its divisors is an integer number (407633166124).

Almost surely, 2^815266332247 is an apocalyptic number.

815266332247 is a deficient number, since it is larger than the sum of its proper divisors (1).

815266332247 is an equidigital number, since it uses as much as digits as its factorization.

815266332247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 49.

The spelling of 815266332247 in words is "eight hundred fifteen billion, two hundred sixty-six million, three hundred thirty-two thousand, two hundred forty-seven".