420511110543 has 48 divisors (see below), whose sum is σ = 656167127616. Its totient is φ = 258536401920.

The previous prime is 420511110533. The next prime is 420511110559. The reversal of 420511110543 is 345011115024.

420511110543 is a `hidden beast` number, since 4 + 2 + 0 + 5 + 1 + 1 + 110 + 543 = 666.

It is not a de Polignac number, because 420511110543 - 2⁴ = 420511110527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420511110533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2368921 + ... + 2540237.

It is an arithmetic number, because the mean of its divisors is an integer number (13670148492).

Almost surely, 2^420511110543 is an apocalyptic number.

420511110543 is a deficient number, since it is larger than the sum of its proper divisors (235656017073).

420511110543 is a wasteful number, since it uses less digits than its factorization.

420511110543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171664 (or 171661 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 420511110543 its reverse (345011115024), we get a palindrome (765522225567).

The spelling of 420511110543 in words is "four hundred twenty billion, five hundred eleven million, one hundred ten thousand, five hundred forty-three".