128180417840 has 80 divisors (see below), whose sum is σ = 299826309888. Its totient is φ = 50962050048.

The previous prime is 128180417831. The next prime is 128180417857. The reversal of 128180417840 is 48714081821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 128180417791 and 128180417800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12072374 + ... + 12082986.

Almost surely, 2^128180417840 is an apocalyptic number.

128180417840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128180417840 is an abundant number, since it is smaller than the sum of its proper divisors (171645892048).

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

128180417840 is a wasteful number, since it uses less digits than its factorization.

128180417840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11526 (or 11520 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 44.

The spelling of 128180417840 in words is "one hundred twenty-eight billion, one hundred eighty million, four hundred seventeen thousand, eight hundred forty".