20555141355 has 48 divisors (see below), whose sum is σ = 42861861120. Its totient is φ = 8902073664.

The previous prime is 20555141323. The next prime is 20555141359. The reversal of 20555141355 is 55314155502.

20555141355 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 514 + 135 + 5 = 666.

It is not a de Polignac number, because 20555141355 - 2⁵ = 20555141323 is a prime.

It is a super-2 number, since 2×20555141355² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20555141359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1711237 + ... + 1723206.

It is an arithmetic number, because the mean of its divisors is an integer number (892955440).

Almost surely, 2^20555141355 is an apocalyptic number.

20555141355 is an abundant number, since it is smaller than the sum of its proper divisors (22306719765).

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

20555141355 is a wasteful number, since it uses less digits than its factorization.

20555141355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434480 (or 3434477 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

Adding to 20555141355 its reverse (55314155502), we get a palindrome (75869296857).

The spelling of 20555141355 in words is "twenty billion, five hundred fifty-five million, one hundred forty-one thousand, three hundred fifty-five".