628161066500 has 96 divisors (see below), whose sum is σ = 1511441672832. Its totient is φ = 226160400000.

The previous prime is 628161066469. The next prime is 628161066517. The reversal of 628161066500 is 5660161826.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9902 + ... + 1120901.

It is an arithmetic number, because the mean of its divisors is an integer number (15744184092).

Almost surely, 2^628161066500 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 628161066500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755720836416).

628161066500 is an abundant number, since it is smaller than the sum of its proper divisors (883280606332).

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

628161066500 is a wasteful number, since it uses less digits than its factorization.

628161066500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130934 (or 1130922 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 628161066500 in words is "six hundred twenty-eight billion, one hundred sixty-one million, sixty-six thousand, five hundred".