20421060046 has 8 divisors (see below), whose sum is σ = 32243779080. Its totient is φ = 9673133688.

The previous prime is 20421060041. The next prime is 20421060053. The reversal of 20421060046 is 64006012402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20421060046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421060041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268698121 + ... + 268698196.

It is an arithmetic number, because the mean of its divisors is an integer number (4030472385).

Almost surely, 2^20421060046 is an apocalyptic number.

20421060046 is a deficient number, since it is larger than the sum of its proper divisors (11822719034).

20421060046 is a wasteful number, since it uses less digits than its factorization.

20421060046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537396338.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20421060046 its reverse (64006012402), we get a palindrome (84427072448).

The spelling of 20421060046 in words is "twenty billion, four hundred twenty-one million, sixty thousand, forty-six".