366660263640 has 512 divisors, whose sum is σ = 1267915161600. Its totient is φ = 84015360000.

The previous prime is 366660263621. The next prime is 366660263663. The reversal of 366660263640 is 46362066663.

It is a self number, because there is not a number n which added to its sum of digits gives 366660263640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 326500119 + ... + 326501241.

It is an arithmetic number, because the mean of its divisors is an integer number (2476396800).

Almost surely, 2^366660263640 is an apocalyptic number.

366660263640 is a gapful number since it is divisible by the number (30) 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 366660263640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633957580800).

366660263640 is an abundant number, since it is smaller than the sum of its proper divisors (901254897960).

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

366660263640 is a wasteful number, since it uses less digits than its factorization.

366660263640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 48.

The spelling of 366660263640 in words is "three hundred sixty-six billion, six hundred sixty million, two hundred sixty-three thousand, six hundred forty".