11554311545 has 16 divisors (see below), whose sum is σ = 16778026368. Its totient is φ = 7456899840.

The previous prime is 11554311541. The next prime is 11554311547. The reversal of 11554311545 is 54511345511.

11554311545 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 11554311545 - 2² = 11554311541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11554311541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9708911 + ... + 9710100.

It is an arithmetic number, because the mean of its divisors is an integer number (1048626648).

Almost surely, 2^11554311545 is an apocalyptic number.

It is an amenable number.

11554311545 is a deficient number, since it is larger than the sum of its proper divisors (5223714823).

11554311545 is a wasteful number, since it uses less digits than its factorization.

11554311545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19419040.

The product of its digits is 30000, while the sum is 35.

The spelling of 11554311545 in words is "eleven billion, five hundred fifty-four million, three hundred eleven thousand, five hundred forty-five".