11444387040 has 144 divisors (see below), whose sum is σ = 41109541200. Its totient is φ = 2891206656.

The previous prime is 11444387039. The next prime is 11444387047. The reversal of 11444387040 is 4078344411.

It is a happy number.

11444387040 is a `hidden beast` number, since 114 + 4 + 438 + 70 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11444386986 and 11444387004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11444387047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181785 + ... + 236504.

It is an arithmetic number, because the mean of its divisors is an integer number (285482925).

Almost surely, 2^11444387040 is an apocalyptic number.

11444387040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11444387040 is an abundant number, since it is smaller than the sum of its proper divisors (29665154160).

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

11444387040 is a wasteful number, since it uses less digits than its factorization.

11444387040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418329 (or 418318 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 11444387040 in words is "eleven billion, four hundred forty-four million, three hundred eighty-seven thousand, forty".