20423523104 has 48 divisors (see below), whose sum is σ = 42631577856. Its totient is φ = 9598080000.

The previous prime is 20423523083. The next prime is 20423523139. The reversal of 20423523104 is 40132532402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383549 + ... + 433539.

It is an arithmetic number, because the mean of its divisors is an integer number (888157872).

Almost surely, 2^20423523104 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 20423523104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21315788928).

20423523104 is an abundant number, since it is smaller than the sum of its proper divisors (22208054752).

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

20423523104 is a wasteful number, since it uses less digits than its factorization.

20423523104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50769 (or 50761 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 20423523104 in words is "twenty billion, four hundred twenty-three million, five hundred twenty-three thousand, one hundred four".