421312161632 has 12 divisors (see below), whose sum is σ = 829458318276. Its totient is φ = 210656080800.

The previous prime is 421312161631. The next prime is 421312161649. The reversal of 421312161632 is 236161213124.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 13166005051 = 421312161632 / (4 + 2 + 1 + 3 + 1 + 2 + 1 + 6 + 1 + 6 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421312161631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6583002494 + ... + 6583002557.

It is an arithmetic number, because the mean of its divisors is an integer number (69121526523).

Almost surely, 2^421312161632 is an apocalyptic number.

It is an amenable number.

421312161632 is a deficient number, since it is larger than the sum of its proper divisors (408146156644).

421312161632 is a wasteful number, since it uses less digits than its factorization.

421312161632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13166005061 (or 13166005053 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

Adding to 421312161632 its reverse (236161213124), we get a palindrome (657473374756).

The spelling of 421312161632 in words is "four hundred twenty-one billion, three hundred twelve million, one hundred sixty-one thousand, six hundred thirty-two".