11451455544 has 64 divisors (see below), whose sum is σ = 30324844800. Its totient is φ = 3591171584.

The previous prime is 11451455537. The next prime is 11451455557. The reversal of 11451455544 is 44555415411.

It is a happy number.

It is a super-2 number, since 2×11451455544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513579 + ... + 1521125.

It is an arithmetic number, because the mean of its divisors is an integer number (473825700).

Almost surely, 2^11451455544 is an apocalyptic number.

It is an amenable number.

11451455544 is an abundant number, since it is smaller than the sum of its proper divisors (18873389256).

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

11451455544 is a wasteful number, since it uses less digits than its factorization.

11451455544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11292 (or 11288 counting only the distinct ones).

The product of its digits is 160000, while the sum is 39.

The spelling of 11451455544 in words is "eleven billion, four hundred fifty-one million, four hundred fifty-five thousand, five hundred forty-four".