16188398771 has 2 divisors, whose sum is σ = 16188398772. Its totient is φ = 16188398770.

The previous prime is 16188398711. The next prime is 16188398777. The reversal of 16188398771 is 17789388161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16188398771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16188398771.

It is not a weakly prime, because it can be changed into another prime (16188398777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8094199385 + 8094199386.

It is an arithmetic number, because the mean of its divisors is an integer number (8094199386).

Almost surely, 2^16188398771 is an apocalyptic number.

16188398771 is a deficient number, since it is larger than the sum of its proper divisors (1).

16188398771 is an equidigital number, since it uses as much as digits as its factorization.

16188398771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 59.

The spelling of 16188398771 in words is "sixteen billion, one hundred eighty-eight million, three hundred ninety-eight thousand, seven hundred seventy-one".