11345415538 has 4 divisors (see below), whose sum is σ = 17018123310. Its totient is φ = 5672707768.

The previous prime is 11345415509. The next prime is 11345415541. The reversal of 11345415538 is 83551454311.

It is a happy number.

11345415538 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.

It can be written as a sum of positive squares in only one way, i.e., 9861085809 + 1484329729 = 99303^2 + 38527^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11345415538.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2836353883 + ... + 2836353886.

Almost surely, 2^11345415538 is an apocalyptic number.

11345415538 is a deficient number, since it is larger than the sum of its proper divisors (5672707772).

11345415538 is an equidigital number, since it uses as much as digits as its factorization.

11345415538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672707771.

The product of its digits is 144000, while the sum is 40.

Adding to 11345415538 its reverse (83551454311), we get a palindrome (94896869849).

The spelling of 11345415538 in words is "eleven billion, three hundred forty-five million, four hundred fifteen thousand, five hundred thirty-eight".