8513040247 has 2 divisors, whose sum is σ = 8513040248. Its totient is φ = 8513040246.

The previous prime is 8513040191. The next prime is 8513040259. The reversal of 8513040247 is 7420403158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8513040247 - 2⁷ = 8513040119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8513040287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256520123 + 4256520124.

It is an arithmetic number, because the mean of its divisors is an integer number (4256520124).

Almost surely, 2^8513040247 is an apocalyptic number.

8513040247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513040247 is an equidigital number, since it uses as much as digits as its factorization.

8513040247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 8513040247 is about 92266.1381385392. The cubic root of 8513040247 is about 2041.8706606675.

The spelling of 8513040247 in words is "eight billion, five hundred thirteen million, forty thousand, two hundred forty-seven".