20043123408 has 900 divisors, whose sum is σ = 79262531040. Its totient is φ = 4772908800.

The previous prime is 20043123379. The next prime is 20043123421. The reversal of 20043123408 is 80432134002.

20043123408 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 312 + 340 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 646552353 + ... + 646552383.

Almost surely, 2^20043123408 is an apocalyptic number.

20043123408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20043123408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39631265520).

20043123408 is an abundant number, since it is smaller than the sum of its proper divisors (59219407632).

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

20043123408 is a wasteful number, since it uses less digits than its factorization.

20043123408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 20043123408 in words is "twenty billion, forty-three million, one hundred twenty-three thousand, four hundred eight".