20423544152 has 16 divisors (see below), whose sum is σ = 41775431400. Its totient is φ = 9283429120.

The previous prime is 20423544137. The next prime is 20423544157. The reversal of 20423544152 is 25144532402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423544157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116042777 + ... + 116042952.

Almost surely, 2^20423544152 is an apocalyptic number.

20423544152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20423544152 is an abundant number, since it is smaller than the sum of its proper divisors (21351887248).

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

20423544152 is a wasteful number, since it uses less digits than its factorization.

20423544152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232085746 (or 232085742 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 20423544152 in words is "twenty billion, four hundred twenty-three million, five hundred forty-four thousand, one hundred fifty-two".