20215445510052 has 192 divisors, whose sum is σ = 57709834076160. Its totient is φ = 6080722386048.

The previous prime is 20215445510021. The next prime is 20215445510093. The reversal of 20215445510052 is 25001554451202.

20215445510052 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 54 + 4 + 551 + 0 + 0 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20215445509989 and 20215445510016.

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, 56770153 + ... + 57125135.

It is an arithmetic number, because the mean of its divisors is an integer number (300572052480).

Almost surely, 2^{20215445510052} 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 20215445510052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28854917038080).

20215445510052 is an abundant number, since it is smaller than the sum of its proper divisors (37494388566108).

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

20215445510052 is a wasteful number, since it uses less digits than its factorization.

20215445510052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355919 (or 355911 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 20215445510052 its reverse (25001554451202), we get a palindrome (45216999961254).

The spelling of 20215445510052 in words is "twenty trillion, two hundred fifteen billion, four hundred forty-five million, five hundred ten thousand, fifty-two".