1183666055920 has 20 divisors (see below), whose sum is σ = 2752023580200. Its totient is φ = 473466422336.

The previous prime is 1183666055899. The next prime is 1183666055921. The reversal of 1183666055920 is 295506663811.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1183666055921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7397912770 + ... + 7397912929.

It is an arithmetic number, because the mean of its divisors is an integer number (137601179010).

Almost surely, 2^{1183666055920} is an apocalyptic number.

1183666055920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1183666055920 is an abundant number, since it is smaller than the sum of its proper divisors (1568357524280).

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

1183666055920 is a wasteful number, since it uses less digits than its factorization.

1183666055920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14795825712 (or 14795825706 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 1183666055920 in words is "one trillion, one hundred eighty-three billion, six hundred sixty-six million, fifty-five thousand, nine hundred twenty".