20132400443 has 2 divisors, whose sum is σ = 20132400444. Its totient is φ = 20132400442.

The previous prime is 20132400439. The next prime is 20132400451. The reversal of 20132400443 is 34400423102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20132400443 - 2² = 20132400439 is a prime.

It is not a weakly prime, because it can be changed into another prime (20132405443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066200221 + 10066200222.

It is an arithmetic number, because the mean of its divisors is an integer number (10066200222).

Almost surely, 2^20132400443 is an apocalyptic number.

20132400443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132400443 is an equidigital number, since it uses as much as digits as its factorization.

20132400443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20132400443 its reverse (34400423102), we get a palindrome (54532823545).

The spelling of 20132400443 in words is "twenty billion, one hundred thirty-two million, four hundred thousand, four hundred forty-three".