128119611844 has 81 divisors (see below), whose sum is σ = 268442974989. Its totient is φ = 53347079520.

The previous prime is 128119611839. The next prime is 128119611863. The reversal of 128119611844 is 448116911821.

The square root of 128119611844 is 357938.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 114643188100 + 13476423744 = 338590^2 + 116088^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128119611794 and 128119611803.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 185411539 + ... + 185412229.

Almost surely, 2^128119611844 is an apocalyptic number.

128119611844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128119611844 is the 357938-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128119611844

128119611844 is an abundant number, since it is smaller than the sum of its proper divisors (140323363145).

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

128119611844 is an frugal number, since it uses more digits than its factorization.

128119611844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 737 counting only the distinct ones).

The product of its digits is 110592, while the sum is 46.

The spelling of 128119611844 in words is "one hundred twenty-eight billion, one hundred nineteen million, six hundred eleven thousand, eight hundred forty-four".