1161794430720 has 1728 divisors, whose sum is σ = 5245491363840. Its totient is φ = 239177318400.

The previous prime is 1161794430707. The next prime is 1161794430721. The reversal of 1161794430720 is 270344971611.

It is a happy number.

1161794430720 is a `hidden beast` number, since 1 + 1 + 61 + 7 + 94 + 430 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161794430721) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4287064185 + ... + 4287064455.

It is an arithmetic number, because the mean of its divisors is an integer number (3035585280).

Almost surely, 2^{1161794430720} is an apocalyptic number.

1161794430720 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 1161794430720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2622745681920).

1161794430720 is an abundant number, since it is smaller than the sum of its proper divisors (4083696933120).

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

1161794430720 is a wasteful number, since it uses less digits than its factorization.

1161794430720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 1161794430720 in words is "one trillion, one hundred sixty-one billion, seven hundred ninety-four million, four hundred thirty thousand, seven hundred twenty".