1178552981268 has 144 divisors (see below), whose sum is σ = 3257481712576. Its totient is φ = 357075164160.

The previous prime is 1178552981239. The next prime is 1178552981279. The reversal of 1178552981268 is 8621892558711.

1178552981268 is a `hidden beast` number, since 1 + 1 + 7 + 8 + 5 + 529 + 81 + 26 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97856055 + ... + 97868097.

Almost surely, 2^{1178552981268} is an apocalyptic number.

1178552981268 is a gapful number since it is divisible by the number (18) 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 1178552981268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628740856288).

1178552981268 is an abundant number, since it is smaller than the sum of its proper divisors (2078928731308).

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

1178552981268 is a wasteful number, since it uses less digits than its factorization.

1178552981268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15254 (or 15249 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 63.

The spelling of 1178552981268 in words is "one trillion, one hundred seventy-eight billion, five hundred fifty-two million, nine hundred eighty-one thousand, two hundred sixty-eight".