20443413140 has 24 divisors (see below), whose sum is σ = 44316045312. Its totient is φ = 7913579040.

The previous prime is 20443413101. The next prime is 20443413157. The reversal of 20443413140 is 4131434402.

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, 16486004 + ... + 16487243.

It is an arithmetic number, because the mean of its divisors is an integer number (1846501888).

Almost surely, 2^20443413140 is an apocalyptic number.

20443413140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20443413140 is an abundant number, since it is smaller than the sum of its proper divisors (23872632172).

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

20443413140 is a wasteful number, since it uses less digits than its factorization.

20443413140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32973287 (or 32973285 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 20443413140 its reverse (4131434402), we get a palindrome (24574847542).

The spelling of 20443413140 in words is "twenty billion, four hundred forty-three million, four hundred thirteen thousand, one hundred forty".