11544534551 has 4 divisors (see below), whose sum is σ = 12594037704. Its totient is φ = 10495031400.

The previous prime is 11544534517. The next prime is 11544534559. The reversal of 11544534551 is 15543544511.

11544534551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11544534551 - 2⁶ = 11544534487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11544534559) 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 3 ways as a sum of consecutive naturals, for example, 524751560 + ... + 524751581.

It is an arithmetic number, because the mean of its divisors is an integer number (3148509426).

Almost surely, 2^11544534551 is an apocalyptic number.

11544534551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11544534551 is a deficient number, since it is larger than the sum of its proper divisors (1049503153).

11544534551 is a wasteful number, since it uses less digits than its factorization.

11544534551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049503152.

The product of its digits is 120000, while the sum is 38.

The spelling of 11544534551 in words is "eleven billion, five hundred forty-four million, five hundred thirty-four thousand, five hundred fifty-one".