11551253215 has 16 divisors (see below), whose sum is σ = 14179046400. Its totient is φ = 9029936160.

The previous prime is 11551253213. The next prime is 11551253251. The reversal of 11551253215 is 51235215511.

It is not a de Polignac number, because 11551253215 - 2¹ = 11551253213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551253213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109336 + ... + 187234.

It is an arithmetic number, because the mean of its divisors is an integer number (886190400).

Almost surely, 2^11551253215 is an apocalyptic number.

11551253215 is a deficient number, since it is larger than the sum of its proper divisors (2627793185).

11551253215 is an equidigital number, since it uses as much as digits as its factorization.

11551253215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78582.

The product of its digits is 7500, while the sum is 31.

Adding to 11551253215 its reverse (51235215511), we get a palindrome (62786468726).

The spelling of 11551253215 in words is "eleven billion, five hundred fifty-one million, two hundred fifty-three thousand, two hundred fifteen".