8263139382457 has 2 divisors, whose sum is σ = 8263139382458. Its totient is φ = 8263139382456.

The previous prime is 8263139382439. The next prime is 8263139382541. The reversal of 8263139382457 is 7542839313628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7283175997696 + 979963384761 = 2698736^2 + 989931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8263139382457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8263139382395 and 8263139382404.

It is not a weakly prime, because it can be changed into another prime (8263139382437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4131569691228 + 4131569691229.

It is an arithmetic number, because the mean of its divisors is an integer number (4131569691229).

Almost surely, 2^{8263139382457} is an apocalyptic number.

It is an amenable number.

8263139382457 is a deficient number, since it is larger than the sum of its proper divisors (1).

8263139382457 is an equidigital number, since it uses as much as digits as its factorization.

8263139382457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 61.

The spelling of 8263139382457 in words is "eight trillion, two hundred sixty-three billion, one hundred thirty-nine million, three hundred eighty-two thousand, four hundred fifty-seven".