11515207049 has 4 divisors (see below), whose sum is σ = 11516592336. Its totient is φ = 11513821764.

The previous prime is 11515207037. The next prime is 11515207073. The reversal of 11515207049 is 94070251511.

It is a happy number.

11515207049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-11515207049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11515237049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680099 + ... + 696824.

It is an arithmetic number, because the mean of its divisors is an integer number (2879148084).

Almost surely, 2^11515207049 is an apocalyptic number.

It is an amenable number.

11515207049 is a deficient number, since it is larger than the sum of its proper divisors (1385287).

11515207049 is an equidigital number, since it uses as much as digits as its factorization.

11515207049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385286.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 11515207049 in words is "eleven billion, five hundred fifteen million, two hundred seven thousand, forty-nine".