20043213140 has 24 divisors (see below), whose sum is σ = 42094541160. Its totient is φ = 8016562688.

The previous prime is 20043213133. The next prime is 20043213193. The reversal of 20043213140 is 4131234002.

It can be written as a sum of positive squares in 4 ways, for example, as 1369444036 + 18673769104 = 37006^2 + 136652^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220376 + ... + 297744.

It is an arithmetic number, because the mean of its divisors is an integer number (1753939215).

Almost surely, 2^20043213140 is an apocalyptic number.

20043213140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043213140 is an abundant number, since it is smaller than the sum of its proper divisors (22051328020).

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

20043213140 is a wasteful number, since it uses less digits than its factorization.

20043213140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90331 (or 90329 counting only the distinct ones).

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

Adding to 20043213140 its reverse (4131234002), we get a palindrome (24174447142).

The spelling of 20043213140 in words is "twenty billion, forty-three million, two hundred thirteen thousand, one hundred forty".