118421717450 has 24 divisors (see below), whose sum is σ = 220274076780. Its totient is φ = 47366604800.

The previous prime is 118421717441. The next prime is 118421717489. The reversal of 118421717450 is 54717124811.

It can be written as a sum of positive squares in 6 ways, for example, as 11187081361 + 107234636089 = 105769^2 + 327467^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 118421717398 and 118421717407.

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 11 ways as a sum of consecutive naturals, for example, 1643786 + ... + 1714314.

Almost surely, 2^118421717450 is an apocalyptic number.

118421717450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118421717450 is a deficient number, since it is larger than the sum of its proper divisors (101852359330).

118421717450 is a wasteful number, since it uses less digits than its factorization.

118421717450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104122 (or 104117 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 41.

The spelling of 118421717450 in words is "one hundred eighteen billion, four hundred twenty-one million, seven hundred seventeen thousand, four hundred fifty".