16123651 has 2 divisors, whose sum is σ = 16123652. Its totient is φ = 16123650.

The previous prime is 16123649. The next prime is 16123691. The reversal of 16123651 is 15632161.

It is a weak prime.

It is an emirp because it is prime and its reverse (15632161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16123651 - 2¹ = 16123649 is a prime.

Together with 16123649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16123691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8061825 + 8061826.

It is an arithmetic number, because the mean of its divisors is an integer number (8061826).

Almost surely, 2^16123651 is an apocalyptic number.

16123651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16123651 is an equidigital number, since it uses as much as digits as its factorization.

16123651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 16123651 is about 4015.4266273959. The cubic root of 16123651 is about 252.6316720037.

The spelling of 16123651 in words is "sixteen million, one hundred twenty-three thousand, six hundred fifty-one".