128995035936 has 96 divisors (see below), whose sum is σ = 365051530368. Its totient is φ = 39648061440.

The previous prime is 128995035931. The next prime is 128995035941. The reversal of 128995035936 is 639530599821.

It is an interprime number because it is at equal distance from previous prime (128995035931) and next prime (128995035941).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×128995035936² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128995035936.

It is not an unprimeable number, because it can be changed into a prime (128995035931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114221 + ... + 1224531.

It is an arithmetic number, because the mean of its divisors is an integer number (3802620108).

Almost surely, 2^128995035936 is an apocalyptic number.

128995035936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128995035936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182525765184).

128995035936 is an abundant number, since it is smaller than the sum of its proper divisors (236056494432).

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

128995035936 is a wasteful number, since it uses less digits than its factorization.

128995035936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111274 (or 111266 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 60.

The spelling of 128995035936 in words is "one hundred twenty-eight billion, nine hundred ninety-five million, thirty-five thousand, nine hundred thirty-six".