20055032140 has 48 divisors (see below), whose sum is σ = 49478436000. Its totient is φ = 6731758080.

The previous prime is 20055032113. The next prime is 20055032147. The reversal of 20055032140 is 4123055002.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 15 ways as a sum of consecutive naturals, for example, 3503265 + ... + 3508984.

It is an arithmetic number, because the mean of its divisors is an integer number (1030800750).

Almost surely, 2^20055032140 is an apocalyptic number.

20055032140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20055032140 is an abundant number, since it is smaller than the sum of its proper divisors (29423403860).

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

20055032140 is a wasteful number, since it uses less digits than its factorization.

20055032140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012282 (or 7012280 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20055032140 its reverse (4123055002), we get a palindrome (24178087142).

The spelling of 20055032140 in words is "twenty billion, fifty-five million, thirty-two thousand, one hundred forty".