12118793345550 has 72 divisors (see below), whose sum is σ = 32815529600256. Its totient is φ = 3206231925120.

The previous prime is 12118793345497. The next prime is 12118793345599. The reversal of 12118793345550 is 5554339781121.

It is a happy number.

12118793345550 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 87 + 9 + 3 + 3 + 4 + 5 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 105969039 + ... + 106083338.

It is an arithmetic number, because the mean of its divisors is an integer number (455771244448).

Almost surely, 2^{12118793345550} is an apocalyptic number.

12118793345550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12118793345550 is an abundant number, since it is smaller than the sum of its proper divisors (20696736254706).

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

12118793345550 is a wasteful number, since it uses less digits than its factorization.

12118793345550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212052522 (or 212052514 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 12118793345550 in words is "twelve trillion, one hundred eighteen billion, seven hundred ninety-three million, three hundred forty-five thousand, five hundred fifty".