128293215886 has 16 divisors (see below), whose sum is σ = 222283433520. Its totient is φ = 54884798080.

The previous prime is 128293215871. The next prime is 128293215887. The reversal of 128293215886 is 688512392821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128293215887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171514621 + ... + 171515368.

It is an arithmetic number, because the mean of its divisors is an integer number (13892714595).

Almost surely, 2^128293215886 is an apocalyptic number.

128293215886 is a deficient number, since it is larger than the sum of its proper divisors (93990217634).

128293215886 is a wasteful number, since it uses less digits than its factorization.

128293215886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343030019.

The product of its digits is 3317760, while the sum is 55.

The spelling of 128293215886 in words is "one hundred twenty-eight billion, two hundred ninety-three million, two hundred fifteen thousand, eight hundred eighty-six".