16432561575439 has 2 divisors, whose sum is σ = 16432561575440. Its totient is φ = 16432561575438.

The previous prime is 16432561575373. The next prime is 16432561575503. The reversal of 16432561575439 is 93457516523461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16432561575439 - 2²³ = 16432553186831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16432561575139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216280787719 + 8216280787720.

It is an arithmetic number, because the mean of its divisors is an integer number (8216280787720).

Almost surely, 2^{16432561575439} is an apocalyptic number.

16432561575439 is a deficient number, since it is larger than the sum of its proper divisors (1).

16432561575439 is an equidigital number, since it uses as much as digits as its factorization.

16432561575439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648000, while the sum is 61.

The spelling of 16432561575439 in words is "sixteen trillion, four hundred thirty-two billion, five hundred sixty-one million, five hundred seventy-five thousand, four hundred thirty-nine".