20055032145 has 24 divisors (see below), whose sum is σ = 34820136000. Its totient is φ = 10678146336.

The previous prime is 20055032113. The next prime is 20055032147. The reversal of 20055032145 is 54123055002.

It is a happy number.

It is not a de Polignac number, because 20055032145 - 2⁵ = 20055032113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20055032147) 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 23 ways as a sum of consecutive naturals, for example, 345055 + ... + 398964.

It is an arithmetic number, because the mean of its divisors is an integer number (1450839000).

Almost surely, 2^20055032145 is an apocalyptic number.

It is an amenable number.

20055032145 is a deficient number, since it is larger than the sum of its proper divisors (14765103855).

20055032145 is a wasteful number, since it uses less digits than its factorization.

20055032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744629 (or 744626 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 20055032145 its reverse (54123055002), we get a palindrome (74178087147).

The spelling of 20055032145 in words is "twenty billion, fifty-five million, thirty-two thousand, one hundred forty-five".