128387098842 has 32 divisors (see below), whose sum is σ = 257273157120. Its totient is φ = 42712593840.

The previous prime is 128387098817. The next prime is 128387098843. The reversal of 128387098842 is 248890783821.

It is not an unprimeable number, because it can be changed into a prime (128387098843) 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, 13772259 + ... + 13781577.

It is an arithmetic number, because the mean of its divisors is an integer number (8039786160).

Almost surely, 2^128387098842 is an apocalyptic number.

128387098842 is an abundant number, since it is smaller than the sum of its proper divisors (128886058278).

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

128387098842 is a wasteful number, since it uses less digits than its factorization.

128387098842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13538.

The product of its (nonzero) digits is 12386304, while the sum is 60.

The spelling of 128387098842 in words is "one hundred twenty-eight billion, three hundred eighty-seven million, ninety-eight thousand, eight hundred forty-two".