11205142511 has 8 divisors (see below), whose sum is σ = 11509405824. Its totient is φ = 10904909400.

The previous prime is 11205142411. The next prime is 11205142537. The reversal of 11205142511 is 11524150211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11205142511 - 2¹⁸ = 11204880367 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 (11205142591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001915 + ... + 1013036.

It is an arithmetic number, because the mean of its divisors is an integer number (1438675728).

Almost surely, 2^11205142511 is an apocalyptic number.

11205142511 is a deficient number, since it is larger than the sum of its proper divisors (304263313).

11205142511 is an equidigital number, since it uses as much as digits as its factorization.

11205142511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015101.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 11205142511 its reverse (11524150211), we get a palindrome (22729292722).

The spelling of 11205142511 in words is "eleven billion, two hundred five million, one hundred forty-two thousand, five hundred eleven".