128528496816 has 80 divisors (see below), whose sum is σ = 335885549568. Its totient is φ = 42348096000.

The previous prime is 128528496793. The next prime is 128528496847. The reversal of 128528496816 is 618694825821.

It is a self number, because there is not a number n which added to its sum of digits gives 128528496816.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1613116 + ... + 1690916.

Almost surely, 2^128528496816 is an apocalyptic number.

128528496816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128528496816 is an abundant number, since it is smaller than the sum of its proper divisors (207357052752).

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

128528496816 is a wasteful number, since it uses less digits than its factorization.

128528496816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78210 (or 78204 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 60.

The spelling of 128528496816 in words is "one hundred twenty-eight billion, five hundred twenty-eight million, four hundred ninety-six thousand, eight hundred sixteen".