420505055050543 has 2 divisors, whose sum is σ = 420505055050544. Its totient is φ = 420505055050542.

The previous prime is 420505055050481. The next prime is 420505055050579. The reversal of 420505055050543 is 345050550505024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420505055050543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420505055050543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420505055056543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210252527525271 + 210252527525272.

It is an arithmetic number, because the mean of its divisors is an integer number (210252527525272).

Almost surely, 2^{420505055050543} is an apocalyptic number.

420505055050543 is a deficient number, since it is larger than the sum of its proper divisors (1).

420505055050543 is an equidigital number, since it uses as much as digits as its factorization.

420505055050543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500000, while the sum is 43.

The spelling of 420505055050543 in words is "four hundred twenty trillion, five hundred five billion, fifty-five million, fifty thousand, five hundred forty-three".