128357651116838 has 24 divisors (see below), whose sum is σ = 227439538887096. Its totient is φ = 53856357110400.

The previous prime is 128357651116831. The next prime is 128357651116841. The reversal of 128357651116838 is 838611156753821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128357651116831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17261649203 + ... + 17261656638.

It is an arithmetic number, because the mean of its divisors is an integer number (9476647453629).

Almost surely, 2^{128357651116838} is an apocalyptic number.

128357651116838 is a deficient number, since it is larger than the sum of its proper divisors (99081887770258).

128357651116838 is a wasteful number, since it uses less digits than its factorization.

128357651116838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34523305880 (or 34523305867 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 65.

The spelling of 128357651116838 in words is "one hundred twenty-eight trillion, three hundred fifty-seven billion, six hundred fifty-one million, one hundred sixteen thousand, eight hundred thirty-eight".