128674500318 has 640 divisors, whose sum is σ = 402904212480. Its totient is φ = 29695610880.

The previous prime is 128674500307. The next prime is 128674500389. The reversal of 128674500318 is 813005476821.

128674500318 is a `hidden beast` number, since 1 + 286 + 7 + 4 + 50 + 0 + 318 = 666.

It is a super-2 number, since 2×128674500318² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 290461405 + ... + 290461847.

It is an arithmetic number, because the mean of its divisors is an integer number (629537832).

Almost surely, 2^128674500318 is an apocalyptic number.

128674500318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128674500318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201452106240).

128674500318 is an abundant number, since it is smaller than the sum of its proper divisors (274229712162).

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

128674500318 is a wasteful number, since it uses less digits than its factorization.

128674500318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 128674500318 in words is "one hundred twenty-eight billion, six hundred seventy-four million, five hundred thousand, three hundred eighteen".