16432506433451 has 2 divisors, whose sum is σ = 16432506433452. Its totient is φ = 16432506433450.

The previous prime is 16432506433439. The next prime is 16432506433543. The reversal of 16432506433451 is 15433460523461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16432506433451 - 2²² = 16432502239147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16432506433396 and 16432506433405.

It is not a weakly prime, because it can be changed into another prime (16432506433351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216253216725 + 8216253216726.

It is an arithmetic number, because the mean of its divisors is an integer number (8216253216726).

Almost surely, 2^{16432506433451} is an apocalyptic number.

16432506433451 is a deficient number, since it is larger than the sum of its proper divisors (1).

16432506433451 is an equidigital number, since it uses as much as digits as its factorization.

16432506433451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 16432506433451 in words is "sixteen trillion, four hundred thirty-two billion, five hundred six million, four hundred thirty-three thousand, four hundred fifty-one".