16954134256789 has 2 divisors, whose sum is σ = 16954134256790. Its totient is φ = 16954134256788.

The previous prime is 16954134256727. The next prime is 16954134256831. The reversal of 16954134256789 is 98765243145961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16530810956100 + 423323300689 = 4065810^2 + 650633^2 .

It is a cyclic number.

It is not a de Polignac number, because 16954134256789 - 2⁹ = 16954134256277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16954134256489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8477067128394 + 8477067128395.

It is an arithmetic number, because the mean of its divisors is an integer number (8477067128395).

Almost surely, 2^{16954134256789} is an apocalyptic number.

It is an amenable number.

16954134256789 is a deficient number, since it is larger than the sum of its proper divisors (1).

16954134256789 is an equidigital number, since it uses as much as digits as its factorization.

16954134256789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 391910400, while the sum is 70.

The spelling of 16954134256789 in words is "sixteen trillion, nine hundred fifty-four billion, one hundred thirty-four million, two hundred fifty-six thousand, seven hundred eighty-nine".