16378405919 has 2 divisors, whose sum is σ = 16378405920. Its totient is φ = 16378405918.

The previous prime is 16378405913. The next prime is 16378405969. The reversal of 16378405919 is 91950487361.

16378405919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16378405919 is a prime.

It is a super-2 number, since 2×16378405919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16378405913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189202959 + 8189202960.

It is an arithmetic number, because the mean of its divisors is an integer number (8189202960).

Almost surely, 2^16378405919 is an apocalyptic number.

16378405919 is a deficient number, since it is larger than the sum of its proper divisors (1).

16378405919 is an equidigital number, since it uses as much as digits as its factorization.

16378405919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 16378405919 in words is "sixteen billion, three hundred seventy-eight million, four hundred five thousand, nine hundred nineteen".