128028663701511 has 16 divisors (see below), whose sum is σ = 171628277761248. Its totient is φ = 84891634790400.

The previous prime is 128028663701483. The next prime is 128028663701563. The reversal of 128028663701511 is 115107366820821.

It is not a de Polignac number, because 128028663701511 - 2⁵ = 128028663701479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128028663701581) 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, 110515210 + ... + 111667671.

It is an arithmetic number, because the mean of its divisors is an integer number (10726767360078).

Almost surely, 2^{128028663701511} is an apocalyptic number.

128028663701511 is a deficient number, since it is larger than the sum of its proper divisors (43599614059737).

128028663701511 is a wasteful number, since it uses less digits than its factorization.

128028663701511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222183922.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 128028663701511 in words is "one hundred twenty-eight trillion, twenty-eight billion, six hundred sixty-three million, seven hundred one thousand, five hundred eleven".