128886681594 has 32 divisors (see below), whose sum is σ = 282932527104. Its totient is φ = 38816956080.

The previous prime is 128886681569. The next prime is 128886681611. The reversal of 128886681594 is 495186688821.

It is a super-2 number, since 2×128886681594² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon 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, 5979514 + ... + 6001029.

It is an arithmetic number, because the mean of its divisors is an integer number (8841641472).

Almost surely, 2^128886681594 is an apocalyptic number.

128886681594 is an abundant number, since it is smaller than the sum of its proper divisors (154045845510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128886681594 is a wasteful number, since it uses less digits than its factorization.

128886681594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11980722.

The product of its digits is 53084160, while the sum is 66.

The spelling of 128886681594 in words is "one hundred twenty-eight billion, eight hundred eighty-six million, six hundred eighty-one thousand, five hundred ninety-four".