128100011802 has 32 divisors (see below), whose sum is σ = 299029819392. Its totient is φ = 35821279344.

The previous prime is 128100011749. The next prime is 128100011803. The reversal of 128100011802 is 208110001821.

It is a super-2 number, since 2×128100011802² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128100011803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32444838 + ... + 32448785.

It is an arithmetic number, because the mean of its divisors is an integer number (9344681856).

Almost surely, 2^128100011802 is an apocalyptic number.

128100011802 is an abundant number, since it is smaller than the sum of its proper divisors (170929807590).

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

128100011802 is a wasteful number, since it uses less digits than its factorization.

128100011802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64893682.

The product of its (nonzero) digits is 256, while the sum is 24.

The spelling of 128100011802 in words is "one hundred twenty-eight billion, one hundred million, eleven thousand, eight hundred two".