20132400439 has 2 divisors, whose sum is σ = 20132400440. Its totient is φ = 20132400438.

The previous prime is 20132400349. The next prime is 20132400443. The reversal of 20132400439 is 93400423102.

Together with previous prime (20132400349) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132400439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132400539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066200219 + 10066200220.

It is an arithmetic number, because the mean of its divisors is an integer number (10066200220).

Almost surely, 2^20132400439 is an apocalyptic number.

20132400439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132400439 is an equidigital number, since it uses as much as digits as its factorization.

20132400439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 20132400439 in words is "twenty billion, one hundred thirty-two million, four hundred thousand, four hundred thirty-nine".