405253312291 has 2 divisors, whose sum is σ = 405253312292. Its totient is φ = 405253312290.

The previous prime is 405253312259. The next prime is 405253312307. The reversal of 405253312291 is 192213352504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405253312291 - 2⁵ = 405253312259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405253312291.

It is not a weakly prime, because it can be changed into another prime (405253318291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202626656145 + 202626656146.

It is an arithmetic number, because the mean of its divisors is an integer number (202626656146).

Almost surely, 2^405253312291 is an apocalyptic number.

405253312291 is a deficient number, since it is larger than the sum of its proper divisors (1).

405253312291 is an equidigital number, since it uses as much as digits as its factorization.

405253312291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 405253312291 its reverse (192213352504), we get a palindrome (597466664795).

The spelling of 405253312291 in words is "four hundred five billion, two hundred fifty-three million, three hundred twelve thousand, two hundred ninety-one".