366918391074816 has 1560 divisors, whose sum is σ = 1326319646509440. Its totient is φ = 98825464184832.

The previous prime is 366918391074803. The next prime is 366918391074863. The reversal of 366918391074816 is 618470193819663.

366918391074816 is a `hidden beast` number, since 3 + 6 + 6 + 9 + 1 + 8 + 39 + 107 + 481 + 6 = 666.

It is a super-2 number, since 2×366918391074816² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 284653522300 + ... + 284653523588.

Almost surely, 2^{366918391074816} is an apocalyptic number.

366918391074816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 366918391074816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663159823254720).

366918391074816 is an abundant number, since it is smaller than the sum of its proper divisors (959401255434624).

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

366918391074816 is an equidigital number, since it uses as much as digits as its factorization.

366918391074816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 366918391074816 in words is "three hundred sixty-six trillion, nine hundred eighteen billion, three hundred ninety-one million, seventy-four thousand, eight hundred sixteen".