665183232000 has 1344 divisors, whose sum is σ = 2866935876480. Its totient is φ = 151732224000.

The previous prime is 665183231959. The next prime is 665183232023. The reversal of 665183232000 is 232381566.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1354751755 + ... + 1354752245.

Almost surely, 2^665183232000 is an apocalyptic number.

665183232000 is a gapful number since it is divisible by the number (60) 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 665183232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433467938240).

665183232000 is an abundant number, since it is smaller than the sum of its proper divisors (2201752644480).

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

665183232000 is an equidigital number, since it uses as much as digits as its factorization.

665183232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 665183232000 in words is "six hundred sixty-five billion, one hundred eighty-three million, two hundred thirty-two thousand".