16919229647 has 2 divisors, whose sum is σ = 16919229648. Its totient is φ = 16919229646.

The previous prime is 16919229641. The next prime is 16919229661. The reversal of 16919229647 is 74692291961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16919229647 - 2⁸ = 16919229391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16919229592 and 16919229601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16919229641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459614823 + 8459614824.

It is an arithmetic number, because the mean of its divisors is an integer number (8459614824).

Almost surely, 2^16919229647 is an apocalyptic number.

16919229647 is a deficient number, since it is larger than the sum of its proper divisors (1).

16919229647 is an equidigital number, since it uses as much as digits as its factorization.

16919229647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The spelling of 16919229647 in words is "sixteen billion, nine hundred nineteen million, two hundred twenty-nine thousand, six hundred forty-seven".