11556333045 has 32 divisors (see below), whose sum is σ = 21625891200. Its totient is φ = 5838988032.

The previous prime is 11556333043. The next prime is 11556333053. The reversal of 11556333045 is 54033365511.

11556333045 is a `hidden beast` number, since 1 + 1 + 556 + 33 + 30 + 45 = 666.

It is not a de Polignac number, because 11556333045 - 2¹ = 11556333043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556333043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2250132 + ... + 2255261.

It is an arithmetic number, because the mean of its divisors is an integer number (675809100).

Almost surely, 2^11556333045 is an apocalyptic number.

11556333045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11556333045 is a deficient number, since it is larger than the sum of its proper divisors (10069558155).

11556333045 is a wasteful number, since it uses less digits than its factorization.

11556333045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505426 (or 4505420 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 11556333045 its reverse (54033365511), we get a palindrome (65589698556).

The spelling of 11556333045 in words is "eleven billion, five hundred fifty-six million, three hundred thirty-three thousand, forty-five".