128316204168111 has 24 divisors (see below), whose sum is σ = 189817081927200. Its totient is φ = 83504246616000.

The previous prime is 128316204168091. The next prime is 128316204168121. The reversal of 128316204168111 is 111861402613821.

It is a happy number.

128316204168111 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 1 + 620 + 4 + 1 + 6 + 8 + 1 + 11 = 666.

It is not a de Polignac number, because 128316204168111 - 2¹¹ = 128316204166063 is a prime.

It is a super-2 number, since 2×128316204168111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128316204168121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 994033636 + ... + 994162713.

It is an arithmetic number, because the mean of its divisors is an integer number (7909045080300).

Almost surely, 2^{128316204168111} is an apocalyptic number.

128316204168111 is a deficient number, since it is larger than the sum of its proper divisors (61500877759089).

128316204168111 is a wasteful number, since it uses less digits than its factorization.

128316204168111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988196527 (or 1988196524 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 128316204168111 in words is "one hundred twenty-eight trillion, three hundred sixteen billion, two hundred four million, one hundred sixty-eight thousand, one hundred eleven".