11513020513111 has 16 divisors (see below), whose sum is σ = 12481583321088. Its totient is φ = 10556316540000.

The previous prime is 11513020513091. The next prime is 11513020513151. The reversal of 11513020513111 is 11131502031511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11513020513111 - 2¹³ = 11513020504919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513020513151) 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, 30338040 + ... + 30715186.

It is an arithmetic number, because the mean of its divisors is an integer number (780098957568).

Almost surely, 2^{11513020513111} is an apocalyptic number.

11513020513111 is a deficient number, since it is larger than the sum of its proper divisors (968562807977).

11513020513111 is a wasteful number, since it uses less digits than its factorization.

11513020513111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392862.

The product of its (nonzero) digits is 450, while the sum is 25.

Adding to 11513020513111 its reverse (11131502031511), we get a palindrome (22644522544622).

The spelling of 11513020513111 in words is "eleven trillion, five hundred thirteen billion, twenty million, five hundred thirteen thousand, one hundred eleven".