666483531264 has 400 divisors, whose sum is σ = 2035491613056. Its totient is φ = 217056153600.

The previous prime is 666483531223. The next prime is 666483531289. The reversal of 666483531264 is 462135384666.

It is a super-2 number, since 2×666483531264² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 666483531264.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 363998829 + ... + 364000659.

Almost surely, 2^666483531264 is an apocalyptic number.

666483531264 is a gapful number since it is divisible by the number (64) 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 666483531264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017745806528).

666483531264 is an abundant number, since it is smaller than the sum of its proper divisors (1369008081792).

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

666483531264 is a wasteful number, since it uses less digits than its factorization.

666483531264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059 (or 2034 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 54.

The spelling of 666483531264 in words is "six hundred sixty-six billion, four hundred eighty-three million, five hundred thirty-one thousand, two hundred sixty-four".