128345351004 has 72 divisors (see below), whose sum is σ = 349689058992. Its totient is φ = 39456460800.

The previous prime is 128345350979. The next prime is 128345351077. The reversal of 128345351004 is 400153543821.

128345351004 is a `hidden beast` number, since 12 + 8 + 3 + 4 + 535 + 100 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 128345351004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420679 + ... + 658529.

It is an arithmetic number, because the mean of its divisors is an integer number (4856792486).

Almost surely, 2^128345351004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128345351004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174844529496).

128345351004 is an abundant number, since it is smaller than the sum of its proper divisors (221343707988).

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

128345351004 is a wasteful number, since it uses less digits than its factorization.

128345351004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239027 (or 239022 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 128345351004 its reverse (400153543821), we get a palindrome (528498894825).

The spelling of 128345351004 in words is "one hundred twenty-eight billion, three hundred forty-five million, three hundred fifty-one thousand, four".