1173320655012 has 192 divisors, whose sum is σ = 3329590118400. Its totient is φ = 354363984000.

The previous prime is 1173320655007. The next prime is 1173320655041. The reversal of 1173320655012 is 2105560233711.

1173320655012 is a `hidden beast` number, since 1 + 1 + 73 + 3 + 20 + 6 + 550 + 12 = 666.

It is a super-3 number, since 3×1173320655012³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 63 ways as a sum of consecutive naturals, for example, 752610289 + ... + 752611847.

It is an arithmetic number, because the mean of its divisors is an integer number (17341615200).

Almost surely, 2^{1173320655012} is an apocalyptic number.

1173320655012 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 1173320655012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1664795059200).

1173320655012 is an abundant number, since it is smaller than the sum of its proper divisors (2156269463388).

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

1173320655012 is a wasteful number, since it uses less digits than its factorization.

1173320655012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295 (or 3287 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

Adding to 1173320655012 its reverse (2105560233711), we get a palindrome (3278880888723).

The spelling of 1173320655012 in words is "one trillion, one hundred seventy-three billion, three hundred twenty million, six hundred fifty-five thousand, twelve".