11524905197 has 4 divisors (see below), whose sum is σ = 12411436380. Its totient is φ = 10638374016.

The previous prime is 11524905187. The next prime is 11524905233. The reversal of 11524905197 is 79150942511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4881677161 + 6643228036 = 69869^2 + 81506^2 .

It is a cyclic number.

It is not a de Polignac number, because 11524905197 - 2¹⁰ = 11524904173 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 (11524905187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443265572 + ... + 443265597.

It is an arithmetic number, because the mean of its divisors is an integer number (3102859095).

Almost surely, 2^11524905197 is an apocalyptic number.

It is an amenable number.

11524905197 is a deficient number, since it is larger than the sum of its proper divisors (886531183).

11524905197 is an equidigital number, since it uses as much as digits as its factorization.

11524905197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886531182.

The product of its (nonzero) digits is 113400, while the sum is 44.

The spelling of 11524905197 in words is "eleven billion, five hundred twenty-four million, nine hundred five thousand, one hundred ninety-seven".