128755977374516 has 12 divisors (see below), whose sum is σ = 225323162985732. Its totient is φ = 64377930807168.

The previous prime is 128755977374461. The next prime is 128755977374543. The reversal of 128755977374516 is 615473779557821.

It can be written as a sum of positive squares in 2 ways, for example, as 71322315124516 + 57433662250000 = 8445254^2 + 7578500^2 .

It is a super-2 number, since 2×128755977374516² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9256085 + ... + 18525308.

It is an arithmetic number, because the mean of its divisors is an integer number (18776930248811).

Almost surely, 2^{128755977374516} is an apocalyptic number.

It is an amenable number.

128755977374516 is a deficient number, since it is larger than the sum of its proper divisors (96567185611216).

128755977374516 is a wasteful number, since it uses less digits than its factorization.

128755977374516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28940050 (or 28940048 counting only the distinct ones).

The product of its digits is 3111696000, while the sum is 77.

The spelling of 128755977374516 in words is "one hundred twenty-eight trillion, seven hundred fifty-five billion, nine hundred seventy-seven million, three hundred seventy-four thousand, five hundred sixteen".