1155344487552 has 896 divisors, whose sum is σ = 3925199088000. Its totient is φ = 336604004352.

The previous prime is 1155344487469. The next prime is 1155344487553. The reversal of 1155344487552 is 2557844435511.

1155344487552 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 3 + 4 + 4 + 4 + 87 + 552 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1155344487553) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1182542488 + ... + 1182543464.

Almost surely, 2^{1155344487552} is an apocalyptic number.

1155344487552 is a gapful number since it is divisible by the number (12) 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 1155344487552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1962599544000).

1155344487552 is an abundant number, since it is smaller than the sum of its proper divisors (2769854600448).

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

1155344487552 is an equidigital number, since it uses as much as digits as its factorization.

1155344487552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1053 counting only the distinct ones).

The product of its digits is 13440000, while the sum is 54.

The spelling of 1155344487552 in words is "one trillion, one hundred fifty-five billion, three hundred forty-four million, four hundred eighty-seven thousand, five hundred fifty-two".