16231178526149 has 2 divisors, whose sum is σ = 16231178526150. Its totient is φ = 16231178526148.

The previous prime is 16231178526127. The next prime is 16231178526169. The reversal of 16231178526149 is 94162587113261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9061261897249 + 7169916628900 = 3010193^2 + 2677670^2 .

It is a cyclic number.

It is not a de Polignac number, because 16231178526149 - 2³⁶ = 16162459049413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16231178526094 and 16231178526103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16231178526109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115589263074 + 8115589263075.

It is an arithmetic number, because the mean of its divisors is an integer number (8115589263075).

Almost surely, 2^{16231178526149} is an apocalyptic number.

It is an amenable number.

16231178526149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16231178526149 is an equidigital number, since it uses as much as digits as its factorization.

16231178526149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 56.

The spelling of 16231178526149 in words is "sixteen trillion, two hundred thirty-one billion, one hundred seventy-eight million, five hundred twenty-six thousand, one hundred forty-nine".