128043615502266 has 64 divisors (see below), whose sum is σ = 276918771064320. Its totient is φ = 39332370795840.

The previous prime is 128043615502237. The next prime is 128043615502301. The reversal of 128043615502266 is 662205516340821.

It is a super-2 number, since 2×128043615502266² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13545685 + ... + 20965991.

It is an arithmetic number, because the mean of its divisors is an integer number (4326855797880).

Almost surely, 2^{128043615502266} is an apocalyptic number.

128043615502266 is an abundant number, since it is smaller than the sum of its proper divisors (148875155562054).

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

128043615502266 is a wasteful number, since it uses less digits than its factorization.

128043615502266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7424459.

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 128043615502266 in words is "one hundred twenty-eight trillion, forty-three billion, six hundred fifteen million, five hundred two thousand, two hundred sixty-six".