11555401415 has 32 divisors (see below), whose sum is σ = 14853269376. Its totient is φ = 8599449600.

The previous prime is 11555401397. The next prime is 11555401421. The reversal of 11555401415 is 51410455511.

11555401415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11555401415 - 2¹⁴ = 11555385031 is a prime.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 8867654 + ... + 8868956.

It is an arithmetic number, because the mean of its divisors is an integer number (464164668).

Almost surely, 2^11555401415 is an apocalyptic number.

11555401415 is a deficient number, since it is larger than the sum of its proper divisors (3297867961).

11555401415 is a wasteful number, since it uses less digits than its factorization.

11555401415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 10000, while the sum is 32.

Adding to 11555401415 its reverse (51410455511), we get a palindrome (62965856926).

The spelling of 11555401415 in words is "eleven billion, five hundred fifty-five million, four hundred one thousand, four hundred fifteen".