128040520105052 has 48 divisors (see below), whose sum is σ = 226899931745760. Its totient is φ = 63218071461888.

The previous prime is 128040520105039. The next prime is 128040520105093. The reversal of 128040520105052 is 250501025040821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81896768 + ... + 83445560.

It is an arithmetic number, because the mean of its divisors is an integer number (4727081911370).

Almost surely, 2^{128040520105052} is an apocalyptic number.

It is an amenable number.

128040520105052 is a deficient number, since it is larger than the sum of its proper divisors (98859411640708).

128040520105052 is a wasteful number, since it uses less digits than its factorization.

128040520105052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549782 (or 1549780 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 128040520105052 its reverse (250501025040821), we get a palindrome (378541545145873).

The spelling of 128040520105052 in words is "one hundred twenty-eight trillion, forty billion, five hundred twenty million, one hundred five thousand, fifty-two".