201511141513 has 4 divisors (see below), whose sum is σ = 219830336208. Its totient is φ = 183191946820.

The previous prime is 201511141501. The next prime is 201511141523. The reversal of 201511141513 is 315141115102.

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 a de Polignac number, because none of the positive numbers 2^k-201511141513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201511141523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9159597331 + ... + 9159597352.

It is an arithmetic number, because the mean of its divisors is an integer number (54957584052).

Almost surely, 2^201511141513 is an apocalyptic number.

It is an amenable number.

201511141513 is a deficient number, since it is larger than the sum of its proper divisors (18319194695).

201511141513 is a wasteful number, since it uses less digits than its factorization.

201511141513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18319194694.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 201511141513 its reverse (315141115102), we get a palindrome (516652256615).

The spelling of 201511141513 in words is "two hundred one billion, five hundred eleven million, one hundred forty-one thousand, five hundred thirteen".