1166804329044 has 96 divisors (see below), whose sum is σ = 2908776407040. Its totient is φ = 363222115200.

The previous prime is 1166804329043. The next prime is 1166804329057. The reversal of 1166804329044 is 4409234086611.

It is a happy number.

It is a super-2 number, since 2×1166804329044² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166804328984 and 1166804329002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166804329043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21667777 + ... + 21721559.

It is an arithmetic number, because the mean of its divisors is an integer number (30299754240).

Almost surely, 2^{1166804329044} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166804329044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1454388203520).

1166804329044 is an abundant number, since it is smaller than the sum of its proper divisors (1741972077996).

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

1166804329044 is a wasteful number, since it uses less digits than its factorization.

1166804329044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55861 (or 55859 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 1166804329044 in words is "one trillion, one hundred sixty-six billion, eight hundred four million, three hundred twenty-nine thousand, forty-four".