366660663348420 has 1152 divisors, whose sum is σ = 1394404352409600. Its totient is φ = 79648734412800.

The previous prime is 366660663348401. The next prime is 366660663348437. The reversal of 366660663348420 is 24843366066663.

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

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 55799823735 + ... + 55799830305.

It is an arithmetic number, because the mean of its divisors is an integer number (1210420444800).

Almost surely, 2^{366660663348420} is an apocalyptic number.

366660663348420 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 366660663348420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697202176204800).

366660663348420 is an abundant number, since it is smaller than the sum of its proper divisors (1027743689061180).

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

366660663348420 is a wasteful number, since it uses less digits than its factorization.

366660663348420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846 (or 7831 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 63.

The spelling of 366660663348420 in words is "three hundred sixty-six trillion, six hundred sixty billion, six hundred sixty-three million, three hundred forty-eight thousand, four hundred twenty".