128556854814 has 32 divisors (see below), whose sum is σ = 264222376704. Its totient is φ = 41676062400.

The previous prime is 128556854791. The next prime is 128556854849. The reversal of 128556854814 is 418458655821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009162 + ... + 1129389.

It is an arithmetic number, because the mean of its divisors is an integer number (8256949272).

Almost surely, 2^128556854814 is an apocalyptic number.

128556854814 is an abundant number, since it is smaller than the sum of its proper divisors (135665521890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128556854814 is a wasteful number, since it uses less digits than its factorization.

128556854814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138832.

The product of its digits is 12288000, while the sum is 57.

The spelling of 128556854814 in words is "one hundred twenty-eight billion, five hundred fifty-six million, eight hundred fifty-four thousand, eight hundred fourteen".