420545770523 has 2 divisors, whose sum is σ = 420545770524. Its totient is φ = 420545770522.

The previous prime is 420545770511. The next prime is 420545770607. The reversal of 420545770523 is 325077545024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420545770523 - 2¹² = 420545766427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (420545776523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210272885261 + 210272885262.

It is an arithmetic number, because the mean of its divisors is an integer number (210272885262).

Almost surely, 2^420545770523 is an apocalyptic number.

420545770523 is a deficient number, since it is larger than the sum of its proper divisors (1).

420545770523 is an equidigital number, since it uses as much as digits as its factorization.

420545770523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176000, while the sum is 44.

The spelling of 420545770523 in words is "four hundred twenty billion, five hundred forty-five million, seven hundred seventy thousand, five hundred twenty-three".