20128248511 has 8 divisors (see below), whose sum is σ = 23006106144. Its totient is φ = 17250989280.

The previous prime is 20128248419. The next prime is 20128248521. The reversal of 20128248511 is 11584282102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20128248511 - 2⁷ = 20128248383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20128248521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75040 + ... + 214213.

It is an arithmetic number, because the mean of its divisors is an integer number (2875763268).

Almost surely, 2^20128248511 is an apocalyptic number.

20128248511 is a deficient number, since it is larger than the sum of its proper divisors (2877857633).

20128248511 is an equidigital number, since it uses as much as digits as its factorization.

20128248511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299201.

The product of its (nonzero) digits is 10240, while the sum is 34.

The spelling of 20128248511 in words is "twenty billion, one hundred twenty-eight million, two hundred forty-eight thousand, five hundred eleven".