11544434454 has 64 divisors (see below), whose sum is σ = 27611974656. Its totient is φ = 3148689024.

The previous prime is 11544434423. The next prime is 11544434471. The reversal of 11544434454 is 45443444511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12279 + ... + 152445.

It is an arithmetic number, because the mean of its divisors is an integer number (431437104).

Almost surely, 2^11544434454 is an apocalyptic number.

11544434454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11544434454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13805987328).

11544434454 is an abundant number, since it is smaller than the sum of its proper divisors (16067540202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11544434454 is a wasteful number, since it uses less digits than its factorization.

11544434454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140269.

The product of its digits is 307200, while the sum is 39.

Adding to 11544434454 its reverse (45443444511), we get a palindrome (56987878965).

The spelling of 11544434454 in words is "eleven billion, five hundred forty-four million, four hundred thirty-four thousand, four hundred fifty-four".