366818616864 has 576 divisors, whose sum is σ = 1249819683840. Its totient is φ = 99878676480.

The previous prime is 366818616851. The next prime is 366818616971. The reversal of 366818616864 is 468616818663.

366818616864 is a `hidden beast` number, since 3 + 6 + 6 + 8 + 1 + 8 + 616 + 8 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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 95 ways as a sum of consecutive naturals, for example, 1108213179 + ... + 1108213509.

It is an arithmetic number, because the mean of its divisors is an integer number (2169825840).

Almost surely, 2^366818616864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 366818616864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624909841920).

366818616864 is an abundant number, since it is smaller than the sum of its proper divisors (883001066976).

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

366818616864 is a wasteful number, since it uses less digits than its factorization.

366818616864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 642 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 63.

The spelling of 366818616864 in words is "three hundred sixty-six billion, eight hundred eighteen million, six hundred sixteen thousand, eight hundred sixty-four".