128144581626 has 16 divisors (see below), whose sum is σ = 259376985504. Its totient is φ = 42200223504.

The previous prime is 128144581577. The next prime is 128144581661. The reversal of 128144581626 is 626185441821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128658721 + ... + 128659716.

It is an arithmetic number, because the mean of its divisors is an integer number (16211061594).

Almost surely, 2^128144581626 is an apocalyptic number.

128144581626 is an abundant number, since it is smaller than the sum of its proper divisors (131232403878).

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

128144581626 is a wasteful number, since it uses less digits than its factorization.

128144581626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257318525.

The product of its digits is 737280, while the sum is 48.

The spelling of 128144581626 in words is "one hundred twenty-eight billion, one hundred forty-four million, five hundred eighty-one thousand, six hundred twenty-six".