20201343140 has 48 divisors (see below), whose sum is σ = 46290291264. Its totient is φ = 7344220800.

The previous prime is 20201343137. The next prime is 20201343179. The reversal of 20201343140 is 4134310202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281587 + ... + 1297253.

It is an arithmetic number, because the mean of its divisors is an integer number (964381068).

Almost surely, 2^20201343140 is an apocalyptic number.

20201343140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201343140 is an abundant number, since it is smaller than the sum of its proper divisors (26088948124).

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

20201343140 is a wasteful number, since it uses less digits than its factorization.

20201343140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21548 (or 21546 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20201343140 its reverse (4134310202), we get a palindrome (24335653342).

The spelling of 20201343140 in words is "twenty billion, two hundred one million, three hundred forty-three thousand, one hundred forty".