8278734999247 has 2 divisors, whose sum is σ = 8278734999248. Its totient is φ = 8278734999246.

The previous prime is 8278734999229. The next prime is 8278734999251. The reversal of 8278734999247 is 7429994378728.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8278734999247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8278734969247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139367499623 + 4139367499624.

It is an arithmetic number, because the mean of its divisors is an integer number (4139367499624).

Almost surely, 2^{8278734999247} is an apocalyptic number.

8278734999247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8278734999247 is an equidigital number, since it uses as much as digits as its factorization.

8278734999247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072577536, while the sum is 79.

The spelling of 8278734999247 in words is "eight trillion, two hundred seventy-eight billion, seven hundred thirty-four million, nine hundred ninety-nine thousand, two hundred forty-seven".