11554473243 has 16 divisors (see below), whose sum is σ = 15622992000. Its totient is φ = 7594842624.

The previous prime is 11554473193. The next prime is 11554473251. The reversal of 11554473243 is 34237445511.

It is not a de Polignac number, because 11554473243 - 2⁹ = 11554472731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11554473263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77755 + ... + 170747.

It is an arithmetic number, because the mean of its divisors is an integer number (976437000).

Almost surely, 2^11554473243 is an apocalyptic number.

11554473243 is a deficient number, since it is larger than the sum of its proper divisors (4068518757).

11554473243 is an equidigital number, since it uses as much as digits as its factorization.

11554473243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93578.

The product of its digits is 201600, while the sum is 39.

The spelling of 11554473243 in words is "eleven billion, five hundred fifty-four million, four hundred seventy-three thousand, two hundred forty-three".