128862937655768 has 64 divisors (see below), whose sum is σ = 252256890816000. Its totient is φ = 61597413326592.

The previous prime is 128862937655719. The next prime is 128862937655779. The reversal of 128862937655768 is 867556739268821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3956596988 + ... + 3956629556.

It is an arithmetic number, because the mean of its divisors is an integer number (3941513919000).

Almost surely, 2^{128862937655768} is an apocalyptic number.

It is an amenable number.

128862937655768 is a deficient number, since it is larger than the sum of its proper divisors (123393953160232).

128862937655768 is a wasteful number, since it uses less digits than its factorization.

128862937655768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43344 (or 43340 counting only the distinct ones).

The product of its digits is 14631321600, while the sum is 83.

The spelling of 128862937655768 in words is "one hundred twenty-eight trillion, eight hundred sixty-two billion, nine hundred thirty-seven million, six hundred fifty-five thousand, seven hundred sixty-eight".