1188450554256 has 180 divisors, whose sum is σ = 3869648809884. Its totient is φ = 339503270400.

The previous prime is 1188450554219. The next prime is 1188450554297. The reversal of 1188450554256 is 6524550548811.

It is a happy number.

1188450554256 is a `hidden beast` number, since 1 + 1 + 8 + 8 + 45 + 0 + 5 + 542 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 978484985856 + 209965568400 = 989184^2 + 458220^2 .

It is a super-2 number, since 2×1188450554256² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70982046 + ... + 70998786.

Almost surely, 2^{1188450554256} is an apocalyptic number.

1188450554256 is a gapful number since it is divisible by the number (16) 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 1188450554256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1934824404942).

1188450554256 is an abundant number, since it is smaller than the sum of its proper divisors (2681198255628).

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

1188450554256 is a wasteful number, since it uses less digits than its factorization.

1188450554256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26830 (or 26814 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 54.

The spelling of 1188450554256 in words is "one trillion, one hundred eighty-eight billion, four hundred fifty million, five hundred fifty-four thousand, two hundred fifty-six".