201630250556 has 12 divisors (see below), whose sum is σ = 403260501168. Its totient is φ = 86412964512.

The previous prime is 201630250553. The next prime is 201630250583. The reversal of 201630250556 is 655052036102.

201630250556 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201630250553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3600540161 + ... + 3600540216.

It is an arithmetic number, because the mean of its divisors is an integer number (33605041764).

Almost surely, 2^201630250556 is an apocalyptic number.

It is an amenable number.

201630250556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

201630250556 is a wasteful number, since it uses less digits than its factorization.

201630250556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201080388 (or 7201080386 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 201630250556 its reverse (655052036102), we get a palindrome (856682286658).

The spelling of 201630250556 in words is "two hundred one billion, six hundred thirty million, two hundred fifty thousand, five hundred fifty-six".