20423314204420 has 24 divisors (see below), whose sum is σ = 43113509365248. Its totient is φ = 8126554341600.

The previous prime is 20423314204213. The next prime is 20423314204429. The reversal of 20423314204420 is 2440241332402.

It is a super-2 number, since 2×20423314204420² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20423314204429) 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, 2673204846 + ... + 2673212485.

It is an arithmetic number, because the mean of its divisors is an integer number (1796396223552).

Almost surely, 2^{20423314204420} is an apocalyptic number.

20423314204420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423314204420 is an abundant number, since it is smaller than the sum of its proper divisors (22690195160828).

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

20423314204420 is a wasteful number, since it uses less digits than its factorization.

20423314204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346417531 (or 5346417529 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20423314204420 its reverse (2440241332402), we get a palindrome (22863555536822).

The spelling of 20423314204420 in words is "twenty trillion, four hundred twenty-three billion, three hundred fourteen million, two hundred four thousand, four hundred twenty".