128256111286558 has 8 divisors (see below), whose sum is σ = 192458763357480. Its totient is φ = 64103190167400.

The previous prime is 128256111286549. The next prime is 128256111286573. The reversal of 128256111286558 is 855682111652821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 128256111286496 and 128256111286505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12432731493 + ... + 12432741808.

It is an arithmetic number, because the mean of its divisors is an integer number (24057345419685).

Almost surely, 2^{128256111286558} is an apocalyptic number.

128256111286558 is a deficient number, since it is larger than the sum of its proper divisors (64202652070922).

128256111286558 is a wasteful number, since it uses less digits than its factorization.

128256111286558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24865475882.

The product of its digits is 18432000, while the sum is 61.

The spelling of 128256111286558 in words is "one hundred twenty-eight trillion, two hundred fifty-six billion, one hundred eleven million, two hundred eighty-six thousand, five hundred fifty-eight".