20201433140 has 96 divisors (see below), whose sum is σ = 50711754240. Its totient is φ = 6609309696.

The previous prime is 20201433139. The next prime is 20201433143. The reversal of 20201433140 is 4133410202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201433143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1387016 + ... + 1401504.

It is an arithmetic number, because the mean of its divisors is an integer number (528247440).

Almost surely, 2^20201433140 is an apocalyptic number.

20201433140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201433140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25355877120).

20201433140 is an abundant number, since it is smaller than the sum of its proper divisors (30510321100).

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

20201433140 is a wasteful number, since it uses less digits than its factorization.

20201433140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14961 (or 14959 counting only the distinct ones).

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

Adding to 20201433140 its reverse (4133410202), we get a palindrome (24334843342).

The spelling of 20201433140 in words is "twenty billion, two hundred one million, four hundred thirty-three thousand, one hundred forty".