20421230156350 has 48 divisors (see below), whose sum is σ = 38490718320288. Its totient is φ = 8059982912640.

The previous prime is 20421230156347. The next prime is 20421230156377. The reversal of 20421230156350 is 5365103212402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5731009 + ... + 8584108.

It is an arithmetic number, because the mean of its divisors is an integer number (801889965006).

Almost surely, 2^{20421230156350} is an apocalyptic number.

20421230156350 is a deficient number, since it is larger than the sum of its proper divisors (18069488163938).

20421230156350 is a wasteful number, since it uses less digits than its factorization.

20421230156350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315509 (or 14315504 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 20421230156350 its reverse (5365103212402), we get a palindrome (25786333368752).

The spelling of 20421230156350 in words is "twenty trillion, four hundred twenty-one billion, two hundred thirty million, one hundred fifty-six thousand, three hundred fifty".