66701232000 has 1280 divisors, whose sum is σ = 276557561280. Its totient is φ = 15825715200.

The previous prime is 66701231981. The next prime is 66701232001. The reversal of 66701232000 is 23210766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66701232001) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 623375947 + ... + 623376053.

Almost surely, 2^66701232000 is an apocalyptic number.

66701232000 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 66701232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138278780640).

66701232000 is an abundant number, since it is smaller than the sum of its proper divisors (209856329280).

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

66701232000 is a wasteful number, since it uses less digits than its factorization.

66701232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

Adding to 66701232000 its reverse (23210766), we get a palindrome (66724442766).

The spelling of 66701232000 in words is "sixty-six billion, seven hundred one million, two hundred thirty-two thousand".