20623005000 has 400 divisors, whose sum is σ = 77753532780. Its totient is φ = 5075136000.

The previous prime is 20623004999. The next prime is 20623005019. The reversal of 20623005000 is 50032602.

It can be written as a sum of positive squares in 10 ways, for example, as 1943222724 + 18679782276 = 44082^2 + 136674^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 5263042 + ... + 5266958.

Almost surely, 2^20623005000 is an apocalyptic number.

20623005000 is a gapful number since it is divisible by the number (20) 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 20623005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38876766390).

20623005000 is an abundant number, since it is smaller than the sum of its proper divisors (57130527780).

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

20623005000 is a wasteful number, since it uses less digits than its factorization.

20623005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968 (or 3940 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20623005000 its reverse (50032602), we get a palindrome (20673037602).

The spelling of 20623005000 in words is "twenty billion, six hundred twenty-three million, five thousand".