505213042023427 has 2 divisors, whose sum is σ = 505213042023428. Its totient is φ = 505213042023426.

The previous prime is 505213042023359. The next prime is 505213042023461. The reversal of 505213042023427 is 724320240312505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505213042023427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505213042023427.

It is not a weakly prime, because it can be changed into another prime (505213042023497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252606521011713 + 252606521011714.

It is an arithmetic number, because the mean of its divisors is an integer number (252606521011714).

Almost surely, 2^{505213042023427} is an apocalyptic number.

505213042023427 is a deficient number, since it is larger than the sum of its proper divisors (1).

505213042023427 is an equidigital number, since it uses as much as digits as its factorization.

505213042023427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 40.

The spelling of 505213042023427 in words is "five hundred five trillion, two hundred thirteen billion, forty-two million, twenty-three thousand, four hundred twenty-seven".