1155544554452 has 24 divisors (see below), whose sum is σ = 2044944748392. Its totient is φ = 571298918400.

The previous prime is 1155544554449. The next prime is 1155544554467. The reversal of 1155544554452 is 2544554455511.

It can be written as a sum of positive squares in 4 ways, for example, as 18770644036 + 1136773910416 = 137006^2 + 1066196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155544554452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2845949 + ... + 3226532.

It is an arithmetic number, because the mean of its divisors is an integer number (85206031183).

Almost surely, 2^{1155544554452} is an apocalyptic number.

It is an amenable number.

1155544554452 is a deficient number, since it is larger than the sum of its proper divisors (889400193940).

1155544554452 is a wasteful number, since it uses less digits than its factorization.

1155544554452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073019 (or 6073017 counting only the distinct ones).

The product of its digits is 8000000, while the sum is 50.

The spelling of 1155544554452 in words is "one trillion, one hundred fifty-five billion, five hundred forty-four million, five hundred fifty-four thousand, four hundred fifty-two".