66381080332 has 48 divisors (see below), whose sum is σ = 137733836800. Its totient is φ = 27392904000.

The previous prime is 66381080231. The next prime is 66381080383. The reversal of 66381080332 is 23308018366.

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, 19419 + ... + 364882.

Almost surely, 2^66381080332 is an apocalyptic number.

66381080332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66381080332 is an abundant number, since it is smaller than the sum of its proper divisors (71352756468).

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

66381080332 is a wasteful number, since it uses less digits than its factorization.

66381080332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384542 (or 384540 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

Adding to 66381080332 its reverse (23308018366), we get a palindrome (89689098698).

The spelling of 66381080332 in words is "sixty-six billion, three hundred eighty-one million, eighty thousand, three hundred thirty-two".