128081761074 has 12 divisors (see below), whose sum is σ = 277510482366. Its totient is φ = 42693920352.

The previous prime is 128081761039. The next prime is 128081761111. The reversal of 128081761074 is 470167180821.

128081761074 is a `hidden beast` number, since 1 + 28 + 0 + 8 + 1 + 7 + 610 + 7 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108541914849 + 19539846225 = 329457^2 + 139785^2 .

It is a Curzon number.

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, 3557826679 + ... + 3557826714.

Almost surely, 2^128081761074 is an apocalyptic number.

128081761074 is an abundant number, since it is smaller than the sum of its proper divisors (149428721292).

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

128081761074 is a wasteful number, since it uses less digits than its factorization.

128081761074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115653401 (or 7115653398 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 128081761074 in words is "one hundred twenty-eight billion, eighty-one million, seven hundred sixty-one thousand, seventy-four".