20423014442400 has 72 divisors (see below), whose sum is σ = 66476912017824. Its totient is φ = 5446137184000.

The previous prime is 20423014442357. The next prime is 20423014442431. The reversal of 20423014442400 is 424441032402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4254792276 + ... + 4254797075.

It is an arithmetic number, because the mean of its divisors is an integer number (923290444692).

Almost surely, 2^{20423014442400} is an apocalyptic number.

20423014442400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20423014442400 is an abundant number, since it is smaller than the sum of its proper divisors (46053897575424).

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

20423014442400 is a wasteful number, since it uses less digits than its factorization.

20423014442400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509589374 (or 8509589361 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20423014442400 its reverse (424441032402), we get a palindrome (20847455474802).

The spelling of 20423014442400 in words is "twenty trillion, four hundred twenty-three billion, fourteen million, four hundred forty-two thousand, four hundred".