128443181252 has 12 divisors (see below), whose sum is σ = 224981601936. Its totient is φ = 64162723560.

The previous prime is 128443181203. The next prime is 128443181257. The reversal of 128443181252 is 252181344821.

It is not an unprimeable number, because it can be changed into a prime (128443181257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14711858 + ... + 14720585.

It is an arithmetic number, because the mean of its divisors is an integer number (18748466828).

Almost surely, 2^128443181252 is an apocalyptic number.

It is an amenable number.

128443181252 is a deficient number, since it is larger than the sum of its proper divisors (96538420684).

128443181252 is a wasteful number, since it uses less digits than its factorization.

128443181252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29433538 (or 29433536 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The spelling of 128443181252 in words is "one hundred twenty-eight billion, four hundred forty-three million, one hundred eighty-one thousand, two hundred fifty-two".