16432575750991 has 2 divisors, whose sum is σ = 16432575750992. Its totient is φ = 16432575750990.

The previous prime is 16432575750989. The next prime is 16432575751121. The reversal of 16432575750991 is 19905757523461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16432575750991 - 2¹ = 16432575750989 is a prime.

Together with 16432575750989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16432575750091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216287875495 + 8216287875496.

It is an arithmetic number, because the mean of its divisors is an integer number (8216287875496).

Almost surely, 2^{16432575750991} is an apocalyptic number.

16432575750991 is a deficient number, since it is larger than the sum of its proper divisors (1).

16432575750991 is an equidigital number, since it uses as much as digits as its factorization.

16432575750991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442000, while the sum is 64.

The spelling of 16432575750991 in words is "sixteen trillion, four hundred thirty-two billion, five hundred seventy-five million, seven hundred fifty thousand, nine hundred ninety-one".