8124782713 has 2 divisors, whose sum is σ = 8124782714. Its totient is φ = 8124782712.

The previous prime is 8124782623. The next prime is 8124782723. The reversal of 8124782713 is 3172874218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5108246784 + 3016535929 = 71472^2 + 54923^2 .

It is a cyclic number.

It is not a de Polignac number, because 8124782713 - 2²⁵ = 8091228281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8124782713.

It is not a weakly prime, because it can be changed into another prime (8124782723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062391356 + 4062391357.

It is an arithmetic number, because the mean of its divisors is an integer number (4062391357).

Almost surely, 2^8124782713 is an apocalyptic number.

It is an amenable number.

8124782713 is a deficient number, since it is larger than the sum of its proper divisors (1).

8124782713 is an equidigital number, since it uses as much as digits as its factorization.

8124782713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 43.

The square root of 8124782713 is about 90137.5765871260. The cubic root of 8124782713 is about 2010.3449580796.

The spelling of 8124782713 in words is "eight billion, one hundred twenty-four million, seven hundred eighty-two thousand, seven hundred thirteen".