11371369509 has 12 divisors (see below), whose sum is σ = 16510419276. Its totient is φ = 7541632512.

The previous prime is 11371369453. The next prime is 11371369531. The reversal of 11371369509 is 90596317311.

It is a happy number.

11371369509 is a `hidden beast` number, since 1 + 1 + 3 + 7 + 136 + 9 + 509 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2472277284 + 8899092225 = 49722^2 + 94335^2 .

It is not a de Polignac number, because 11371369509 - 2⁷ = 11371369381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11371369549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3271542 + ... + 3275015.

It is an arithmetic number, because the mean of its divisors is an integer number (1375868273).

Almost surely, 2^11371369509 is an apocalyptic number.

It is an amenable number.

11371369509 is a deficient number, since it is larger than the sum of its proper divisors (5139049767).

11371369509 is a wasteful number, since it uses less digits than its factorization.

11371369509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546756 (or 6546753 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The spelling of 11371369509 in words is "eleven billion, three hundred seventy-one million, three hundred sixty-nine thousand, five hundred nine".