128157591773558 has 16 divisors (see below), whose sum is σ = 200604072925440. Its totient is φ = 61289833616616.

The previous prime is 128157591773557. The next prime is 128157591773567. The reversal of 128157591773558 is 855377195751821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128157591773557) 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, 65564210 + ... + 67490597.

It is an arithmetic number, because the mean of its divisors is an integer number (12537754557840).

Almost surely, 2^{128157591773558} is an apocalyptic number.

128157591773558 is a deficient number, since it is larger than the sum of its proper divisors (72446481151882).

128157591773558 is a wasteful number, since it uses less digits than its factorization.

128157591773558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133075771.

The product of its digits is 740880000, while the sum is 74.

The spelling of 128157591773558 in words is "one hundred twenty-eight trillion, one hundred fifty-seven billion, five hundred ninety-one million, seven hundred seventy-three thousand, five hundred fifty-eight".