128992942540036 has 27 divisors (see below), whose sum is σ = 225940762217919. Its totient is φ = 64438491201888.

The previous prime is 128992942539959. The next prime is 128992942540061. The reversal of 128992942540036 is 630045249299821.

The square root of 128992942540036 is 11357506.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 114381099908100 + 14611842631936 = 10694910^2 + 3822544^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128992942540036.

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 8 ways as a sum of consecutive naturals, for example, 37184472910 + ... + 37184476378.

Almost surely, 2^{128992942540036} is an apocalyptic number.

128992942540036 is the 11357506-th square number.

It is an amenable number.

128992942540036 is a deficient number, since it is larger than the sum of its proper divisors (96947819677883).

128992942540036 is an frugal number, since it uses more digits than its factorization.

128992942540036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10216 (or 5108 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 64.

The spelling of 128992942540036 in words is "one hundred twenty-eight trillion, nine hundred ninety-two billion, nine hundred forty-two million, five hundred forty thousand, thirty-six".