128581963362 has 12 divisors (see below), whose sum is σ = 278594253990. Its totient is φ = 42860654448.

The previous prime is 128581963357. The next prime is 128581963397. The reversal of 128581963362 is 263369185821.

128581963362 is a `hidden beast` number, since 1 + 28 + 581 + 9 + 6 + 3 + 36 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 128472781761 + 109181601 = 358431^2 + 10449^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128581963299 and 128581963308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3571721187 + ... + 3571721222.

Almost surely, 2^128581963362 is an apocalyptic number.

128581963362 is an abundant number, since it is smaller than the sum of its proper divisors (150012290628).

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

128581963362 is a wasteful number, since it uses less digits than its factorization.

128581963362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143442417 (or 7143442414 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 128581963362 in words is "one hundred twenty-eight billion, five hundred eighty-one million, nine hundred sixty-three thousand, three hundred sixty-two".