1163797998066 has 256 divisors, whose sum is σ = 3092202086400. Its totient is φ = 320604480000.

The previous prime is 1163797998061. The next prime is 1163797998109. The reversal of 1163797998066 is 6608997973611.

1163797998066 is a `hidden beast` number, since 116 + 379 + 7 + 9 + 9 + 80 + 66 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1163797997985 and 1163797998003.

It is not an unprimeable number, because it can be changed into a prime (1163797998061) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28205671 + ... + 28246901.

It is an arithmetic number, because the mean of its divisors is an integer number (12078914400).

Almost surely, 2^{1163797998066} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163797998066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1546101043200).

1163797998066 is an abundant number, since it is smaller than the sum of its proper divisors (1928404088334).

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

1163797998066 is a wasteful number, since it uses less digits than its factorization.

1163797998066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41374 (or 41368 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 72.

The spelling of 1163797998066 in words is "one trillion, one hundred sixty-three billion, seven hundred ninety-seven million, nine hundred ninety-eight thousand, sixty-six".