11554354644 has 72 divisors (see below), whose sum is σ = 31452755040. Its totient is φ = 3291672384.

The previous prime is 11554354639. The next prime is 11554354649. The reversal of 11554354644 is 44645345511.

11554354644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11554354639) and next prime (11554354649).

It is a super-2 number, since 2×11554354644² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 11554354596 and 11554354605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11554354649) 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 23 ways as a sum of consecutive naturals, for example, 175722 + ... + 232350.

It is an arithmetic number, because the mean of its divisors is an integer number (436843820).

Almost surely, 2^11554354644 is an apocalyptic number.

11554354644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11554354644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15726377520).

11554354644 is an abundant number, since it is smaller than the sum of its proper divisors (19898400396).

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

11554354644 is a wasteful number, since it uses less digits than its factorization.

11554354644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56997 (or 56988 counting only the distinct ones).

The product of its digits is 576000, while the sum is 42.

The spelling of 11554354644 in words is "eleven billion, five hundred fifty-four million, three hundred fifty-four thousand, six hundred forty-four".