11128868501 has 4 divisors (see below), whose sum is σ = 11236915872. Its totient is φ = 11020821132.

The previous prime is 11128868489. The next prime is 11128868533. The reversal of 11128868501 is 10586882111.

11128868501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11128868501 - 2⁶ = 11128868437 is a prime.

It is a super-2 number, since 2×11128868501² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11128868551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54023531 + ... + 54023736.

It is an arithmetic number, because the mean of its divisors is an integer number (2809228968).

Almost surely, 2^11128868501 is an apocalyptic number.

It is an amenable number.

11128868501 is a deficient number, since it is larger than the sum of its proper divisors (108047371).

11128868501 is a wasteful number, since it uses less digits than its factorization.

11128868501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108047370.

The product of its (nonzero) digits is 30720, while the sum is 41.

The spelling of 11128868501 in words is "eleven billion, one hundred twenty-eight million, eight hundred sixty-eight thousand, five hundred one".