420513522444 has 72 divisors (see below), whose sum is σ = 1109333901312. Its totient is φ = 134058244320.

The previous prime is 420513522433. The next prime is 420513522461. The reversal of 420513522444 is 444225315024.

420513522444 is a `hidden beast` number, since 4 + 205 + 1 + 3 + 5 + 2 + 2 + 444 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 420513522399 and 420513522408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6751147 + ... + 6813149.

It is an arithmetic number, because the mean of its divisors is an integer number (15407415296).

Almost surely, 2^420513522444 is an apocalyptic number.

It is an amenable number.

420513522444 is an abundant number, since it is smaller than the sum of its proper divisors (688820378868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420513522444 is a wasteful number, since it uses less digits than its factorization.

420513522444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70227 (or 70222 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 420513522444 its reverse (444225315024), we get a palindrome (864738837468).

The spelling of 420513522444 in words is "four hundred twenty billion, five hundred thirteen million, five hundred twenty-two thousand, four hundred forty-four".