1163999655000 has 960 divisors, whose sum is σ = 4948247304000. Its totient is φ = 245548800000.

The previous prime is 1163999654989. The next prime is 1163999655023. The reversal of 1163999655000 is 5569993611.

It is a happy number.

1163999655000 is a `hidden beast` number, since 1 + 16 + 39 + 9 + 96 + 5 + 500 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 200652100 + ... + 200657900.

It is an arithmetic number, because the mean of its divisors is an integer number (5154424275).

Almost surely, 2^{1163999655000} is an apocalyptic number.

1163999655000 is a gapful number since it is divisible by the number (10) 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 1163999655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2474123652000).

1163999655000 is an abundant number, since it is smaller than the sum of its proper divisors (3784247649000).

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

1163999655000 is a wasteful number, since it uses less digits than its factorization.

1163999655000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867 (or 5831 counting only the distinct ones).

The product of its (nonzero) digits is 1968300, while the sum is 54.

The spelling of 1163999655000 in words is "one trillion, one hundred sixty-three billion, nine hundred ninety-nine million, six hundred fifty-five thousand".