420463653541 has 2 divisors, whose sum is σ = 420463653542. Its totient is φ = 420463653540.

The previous prime is 420463653527. The next prime is 420463653559. The reversal of 420463653541 is 145356364024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417149348641 + 3314304900 = 645871^2 + 57570^2 .

It is a cyclic number.

It is not a de Polignac number, because 420463653541 - 2⁵ = 420463653509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420463653041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210231826770 + 210231826771.

It is an arithmetic number, because the mean of its divisors is an integer number (210231826771).

Almost surely, 2^420463653541 is an apocalyptic number.

It is an amenable number.

420463653541 is a deficient number, since it is larger than the sum of its proper divisors (1).

420463653541 is an equidigital number, since it uses as much as digits as its factorization.

420463653541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 420463653541 in words is "four hundred twenty billion, four hundred sixty-three million, six hundred fifty-three thousand, five hundred forty-one".