420205003636 has 24 divisors (see below), whose sum is σ = 802341296064. Its totient is φ = 190970906880.

The previous prime is 420205003601. The next prime is 420205003639. The reversal of 420205003636 is 636300502024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420205003598 and 420205003607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420205003639) 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 in 7 ways as a sum of consecutive naturals, for example, 512160 + ... + 1050103.

It is an arithmetic number, because the mean of its divisors is an integer number (33430887336).

Almost surely, 2^420205003636 is an apocalyptic number.

It is an amenable number.

420205003636 is a deficient number, since it is larger than the sum of its proper divisors (382136292428).

420205003636 is a wasteful number, since it uses less digits than its factorization.

420205003636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568391 (or 1568389 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 420205003636 in words is "four hundred twenty billion, two hundred five million, three thousand, six hundred thirty-six".