408523142257 has 2 divisors, whose sum is σ = 408523142258. Its totient is φ = 408523142256.

The previous prime is 408523142233. The next prime is 408523142341. The reversal of 408523142257 is 752241325804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223346979216 + 185176163041 = 472596^2 + 430321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408523142257 is a prime.

It is not a weakly prime, because it can be changed into another prime (408523142957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204261571128 + 204261571129.

It is an arithmetic number, because the mean of its divisors is an integer number (204261571129).

Almost surely, 2^408523142257 is an apocalyptic number.

It is an amenable number.

408523142257 is a deficient number, since it is larger than the sum of its proper divisors (1).

408523142257 is an equidigital number, since it uses as much as digits as its factorization.

408523142257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 408523142257 in words is "four hundred eight billion, five hundred twenty-three million, one hundred forty-two thousand, two hundred fifty-seven".