20423451542112 has 576 divisors, whose sum is σ = 62366514537600. Its totient is φ = 6328654725120.

The previous prime is 20423451542099. The next prime is 20423451542147. The reversal of 20423451542112 is 21124515432402.

20423451542112 is a `hidden beast` number, since 2 + 0 + 4 + 23 + 4 + 515 + 4 + 2 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7322856814 + ... + 7322859602.

It is an arithmetic number, because the mean of its divisors is an integer number (108275198850).

Almost surely, 2^{20423451542112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20423451542112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31183257268800).

20423451542112 is an abundant number, since it is smaller than the sum of its proper divisors (41943062995488).

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

20423451542112 is a wasteful number, since it uses less digits than its factorization.

20423451542112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191 (or 3180 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 20423451542112 its reverse (21124515432402), we get a palindrome (41547966974514).

The spelling of 20423451542112 in words is "twenty trillion, four hundred twenty-three billion, four hundred fifty-one million, five hundred forty-two thousand, one hundred twelve".