128711711818504 has 32 divisors (see below), whose sum is σ = 241503588027000. Its totient is φ = 64310763479040.

The previous prime is 128711711818433. The next prime is 128711711818519. The reversal of 128711711818504 is 405818117117821.

It can be written as a sum of positive squares in 4 ways, for example, as 116024565960900 + 12687145857604 = 10771470^2 + 3561902^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122325364 + ... + 123373084.

Almost surely, 2^{128711711818504} is an apocalyptic number.

It is an amenable number.

128711711818504 is a deficient number, since it is larger than the sum of its proper divisors (112791876208496).

128711711818504 is a wasteful number, since it uses less digits than its factorization.

128711711818504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058473 (or 1058469 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 55.

The spelling of 128711711818504 in words is "one hundred twenty-eight trillion, seven hundred eleven billion, seven hundred eleven million, eight hundred eighteen thousand, five hundred four".