128556010534 has 8 divisors (see below), whose sum is σ = 220381732368. Its totient is φ = 55095433080.

The previous prime is 128556010439. The next prime is 128556010553. The reversal of 128556010534 is 435010655821.

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

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, 4591286077 + ... + 4591286104.

It is an arithmetic number, because the mean of its divisors is an integer number (27547716546).

Almost surely, 2^128556010534 is an apocalyptic number.

128556010534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128556010534 is a deficient number, since it is larger than the sum of its proper divisors (91825721834).

128556010534 is an equidigital number, since it uses as much as digits as its factorization.

128556010534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9182572190.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 128556010534 in words is "one hundred twenty-eight billion, five hundred fifty-six million, ten thousand, five hundred thirty-four".