11556411475 has 12 divisors (see below), whose sum is σ = 16377086224. Its totient is φ = 7924396320.

The previous prime is 11556411409. The next prime is 11556411497. The reversal of 11556411475 is 57411465511.

It is not a de Polignac number, because 11556411475 - 2⁹ = 11556410963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33018144 + ... + 33018493.

Almost surely, 2^11556411475 is an apocalyptic number.

11556411475 is a deficient number, since it is larger than the sum of its proper divisors (4820674749).

11556411475 is an equidigital number, since it uses as much as digits as its factorization.

11556411475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66036654 (or 66036649 counting only the distinct ones).

The product of its digits is 84000, while the sum is 40.

Adding to 11556411475 its reverse (57411465511), we get a palindrome (68967876986).

The spelling of 11556411475 in words is "eleven billion, five hundred fifty-six million, four hundred eleven thousand, four hundred seventy-five".