826356342457 has 2 divisors, whose sum is σ = 826356342458. Its totient is φ = 826356342456.

The previous prime is 826356342403. The next prime is 826356342491. The reversal of 826356342457 is 754243653628.

It is a happy number.

826356342457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670819969296 + 155536373161 = 819036^2 + 394381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-826356342457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 826356342398 and 826356342407.

It is not a weakly prime, because it can be changed into another prime (826356346457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413178171228 + 413178171229.

It is an arithmetic number, because the mean of its divisors is an integer number (413178171229).

Almost surely, 2^826356342457 is an apocalyptic number.

It is an amenable number.

826356342457 is a deficient number, since it is larger than the sum of its proper divisors (1).

826356342457 is an equidigital number, since it uses as much as digits as its factorization.

826356342457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 55.

The spelling of 826356342457 in words is "eight hundred twenty-six billion, three hundred fifty-six million, three hundred forty-two thousand, four hundred fifty-seven".