128704665070 has 32 divisors (see below), whose sum is σ = 233737941600. Its totient is φ = 51023187456.

The previous prime is 128704665053. The next prime is 128704665073. The reversal of 128704665070 is 70566407821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 128704665070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128704665073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772146 + ... + 923914.

It is an arithmetic number, because the mean of its divisors is an integer number (7304310675).

Almost surely, 2^128704665070 is an apocalyptic number.

128704665070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128704665070 is a deficient number, since it is larger than the sum of its proper divisors (105033276530).

128704665070 is a wasteful number, since it uses less digits than its factorization.

128704665070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152532.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 128704665070 in words is "one hundred twenty-eight billion, seven hundred four million, six hundred sixty-five thousand, seventy".