118021781606603 has 16 divisors (see below), whose sum is σ = 141982459261440. Its totient is φ = 95836312382400.

The previous prime is 118021781606591. The next prime is 118021781606621. The reversal of 118021781606603 is 306606187120811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 118021781606603 - 2⁶ = 118021781606539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118021781606653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9744743 + ... + 18193503.

It is an arithmetic number, because the mean of its divisors is an integer number (8873903703840).

Almost surely, 2^{118021781606603} is an apocalyptic number.

118021781606603 is a deficient number, since it is larger than the sum of its proper divisors (23960677654837).

118021781606603 is a wasteful number, since it uses less digits than its factorization.

118021781606603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8553818.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 118021781606603 in words is "one hundred eighteen trillion, twenty-one billion, seven hundred eighty-one million, six hundred six thousand, six hundred three".