11455312444 has 24 divisors (see below), whose sum is σ = 20512795968. Its totient is φ = 5594983680.

The previous prime is 11455312441. The next prime is 11455312457. The reversal of 11455312444 is 44421355411.

It is a happy number.

It is a super-2 number, since 2×11455312444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11455312441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39472 + ... + 156424.

It is an arithmetic number, because the mean of its divisors is an integer number (854699832).

Almost surely, 2^11455312444 is an apocalyptic number.

It is an amenable number.

11455312444 is a deficient number, since it is larger than the sum of its proper divisors (9057483524).

11455312444 is a wasteful number, since it uses less digits than its factorization.

11455312444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117525 (or 117523 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

Adding to 11455312444 its reverse (44421355411), we get a palindrome (55876667855).

The spelling of 11455312444 in words is "eleven billion, four hundred fifty-five million, three hundred twelve thousand, four hundred forty-four".