20135027315550 has 192 divisors, whose sum is σ = 57157238131200. Its totient is φ = 4595134502400.

The previous prime is 20135027315537. The next prime is 20135027315593. The reversal of 20135027315550 is 5551372053102.

It is a super-3 number, since 3×20135027315550³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20135027315499 and 20135027315508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2785309336 + ... + 2785316564.

It is an arithmetic number, because the mean of its divisors is an integer number (297693948600).

Almost surely, 2^{20135027315550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20135027315550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28578619065600).

20135027315550 is an abundant number, since it is smaller than the sum of its proper divisors (37022210815650).

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

20135027315550 is a wasteful number, since it uses less digits than its factorization.

20135027315550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011 (or 11006 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 39.

Adding to 20135027315550 its reverse (5551372053102), we get a palindrome (25686399368652).

The spelling of 20135027315550 in words is "twenty trillion, one hundred thirty-five billion, twenty-seven million, three hundred fifteen thousand, five hundred fifty".