20163731023446 has 64 divisors (see below), whose sum is σ = 44248972204800. Its totient is φ = 6100994390400.

The previous prime is 20163731023421. The next prime is 20163731023451. The reversal of 20163731023446 is 64432013736102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20163731023398 and 20163731023407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22846045 + ... + 23712216.

It is an arithmetic number, because the mean of its divisors is an integer number (691390190700).

Almost surely, 2^{20163731023446} is an apocalyptic number.

20163731023446 is an abundant number, since it is smaller than the sum of its proper divisors (24085241181354).

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

20163731023446 is a wasteful number, since it uses less digits than its factorization.

20163731023446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46558445.

The product of its (nonzero) digits is 435456, while the sum is 42.

Adding to 20163731023446 its reverse (64432013736102), we get a palindrome (84595744759548).

The spelling of 20163731023446 in words is "twenty trillion, one hundred sixty-three billion, seven hundred thirty-one million, twenty-three thousand, four hundred forty-six".