11511113401 has 16 divisors (see below), whose sum is σ = 11876010496. Its totient is φ = 11149197696.

The previous prime is 11511113381. The next prime is 11511113413. The reversal of 11511113401 is 10431111511.

It is a cyclic number.

It is not a de Polignac number, because 11511113401 - 2²¹ = 11509016249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11511113431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12284605 + ... + 12285541.

It is an arithmetic number, because the mean of its divisors is an integer number (742250656).

Almost surely, 2^11511113401 is an apocalyptic number.

It is an amenable number.

11511113401 is a deficient number, since it is larger than the sum of its proper divisors (364897095).

11511113401 is an equidigital number, since it uses as much as digits as its factorization.

11511113401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 11511113401 its reverse (10431111511), we get a palindrome (21942224912).

The spelling of 11511113401 in words is "eleven billion, five hundred eleven million, one hundred thirteen thousand, four hundred one".