11515226445 has 48 divisors (see below), whose sum is σ = 20179216512. Its totient is φ = 6074075520.

The previous prime is 11515226413. The next prime is 11515226447. The reversal of 11515226445 is 54462251511.

11515226445 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 5 + 2 + 2 + 644 + 5 = 666.

It is not a de Polignac number, because 11515226445 - 2⁵ = 11515226413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515226447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6613275 + ... + 6615015.

It is an arithmetic number, because the mean of its divisors is an integer number (420400344).

Almost surely, 2^11515226445 is an apocalyptic number.

11515226445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11515226445 is a deficient number, since it is larger than the sum of its proper divisors (8663990067).

11515226445 is a wasteful number, since it uses less digits than its factorization.

11515226445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282 (or 3279 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 11515226445 its reverse (54462251511), we get a palindrome (65977477956).

The spelling of 11515226445 in words is "eleven billion, five hundred fifteen million, two hundred twenty-six thousand, four hundred forty-five".