20215000424000 has 448 divisors, whose sum is σ = 54207503520768. Its totient is φ = 7438475264000.

The previous prime is 20215000423997. The next prime is 20215000424023. The reversal of 20215000424000 is 42400051202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6206630372 + ... + 6206633628.

Almost surely, 2^{20215000424000} is an apocalyptic number.

20215000424000 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 20215000424000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27103751760384).

20215000424000 is an abundant number, since it is smaller than the sum of its proper divisors (33992503096768).

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

20215000424000 is a wasteful number, since it uses less digits than its factorization.

20215000424000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319 (or 4299 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20215000424000 its reverse (42400051202), we get a palindrome (20257400475202).

The spelling of 20215000424000 in words is "twenty trillion, two hundred fifteen billion, four hundred twenty-four thousand".