11911934168389 has 2 divisors, whose sum is σ = 11911934168390. Its totient is φ = 11911934168388.

The previous prime is 11911934168327. The next prime is 11911934168401. The reversal of 11911934168389 is 98386143911911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10896323717764 + 1015610450625 = 3300958^2 + 1007775^2 .

It is a cyclic number.

It is not a de Polignac number, because 11911934168389 - 2¹⁷ = 11911934037317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11911934168389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11911934166389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5955967084194 + 5955967084195.

It is an arithmetic number, because the mean of its divisors is an integer number (5955967084195).

Almost surely, 2^{11911934168389} is an apocalyptic number.

It is an amenable number.

11911934168389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11911934168389 is an equidigital number, since it uses as much as digits as its factorization.

11911934168389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 64.

The spelling of 11911934168389 in words is "eleven trillion, nine hundred eleven billion, nine hundred thirty-four million, one hundred sixty-eight thousand, three hundred eighty-nine".