366819918663 has 16 divisors (see below), whose sum is σ = 542599574400. Its totient is φ = 218547048480.

The previous prime is 366819918649. The next prime is 366819918667.

366819918663 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 366819918663 - 2¹⁸ = 366819656519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 366819918594 and 366819918603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366819918667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94199368 + ... + 94203261.

It is an arithmetic number, because the mean of its divisors is an integer number (33912473400).

Almost surely, 2^366819918663 is an apocalyptic number.

366819918663 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

366819918663 is a deficient number, since it is larger than the sum of its proper divisors (175779655737).

366819918663 is a wasteful number, since it uses less digits than its factorization.

366819918663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188402702.

The product of its digits is 60466176, while the sum is 66.

The spelling of 366819918663 in words is "three hundred sixty-six billion, eight hundred nineteen million, nine hundred eighteen thousand, six hundred sixty-three".