1161455229792 has 432 divisors, whose sum is σ = 3922682609664. Its totient is φ = 323805081600.

The previous prime is 1161455229751. The next prime is 1161455229793. The reversal of 1161455229792 is 2979225541611.

1161455229792 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 45 + 522 + 9 + 79 + 2 = 666.

It is a super-3 number, since 3×1161455229792³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161455229793) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 141792417 + ... + 141800607.

Almost surely, 2^{1161455229792} is an apocalyptic number.

1161455229792 is a gapful number since it is divisible by the number (12) 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 1161455229792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961341304832).

1161455229792 is an abundant number, since it is smaller than the sum of its proper divisors (2761227379872).

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

1161455229792 is a wasteful number, since it uses less digits than its factorization.

1161455229792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555 (or 8533 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The spelling of 1161455229792 in words is "one trillion, one hundred sixty-one billion, four hundred fifty-five million, two hundred twenty-nine thousand, seven hundred ninety-two".