66374231000 has 256 divisors, whose sum is σ = 194243512320. Its totient is φ = 20623680000.

The previous prime is 66374230987. The next prime is 66374231017. The reversal of 66374231000 is 13247366.

It is a super-2 number, since 2×66374231000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28719845 + ... + 28722155.

It is an arithmetic number, because the mean of its divisors is an integer number (758763720).

Almost surely, 2^66374231000 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 66374231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97121756160).

66374231000 is an abundant number, since it is smaller than the sum of its proper divisors (127869281320).

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

66374231000 is a wasteful number, since it uses less digits than its factorization.

66374231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723 (or 2709 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 66374231000 its reverse (13247366), we get a palindrome (66387478366).

The spelling of 66374231000 in words is "sixty-six billion, three hundred seventy-four million, two hundred thirty-one thousand".