667165432000 has 112 divisors (see below), whose sum is σ = 1652608470240. Its totient is φ = 266805888000.

The previous prime is 667165431967. The next prime is 667165432039. The reversal of 667165432000 is 234561766.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56866135 + ... + 56877865.

It is an arithmetic number, because the mean of its divisors is an integer number (14755432770).

Almost surely, 2^667165432000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667165432000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826304235120).

667165432000 is an abundant number, since it is smaller than the sum of its proper divisors (985443038240).

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

667165432000 is a wasteful number, since it uses less digits than its factorization.

667165432000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18867 (or 18847 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 667165432000 its reverse (234561766), we get a palindrome (667399993766).

The spelling of 667165432000 in words is "six hundred sixty-seven billion, one hundred sixty-five million, four hundred thirty-two thousand".