31628566652 has 6 divisors (see below), whose sum is σ = 55349991648. Its totient is φ = 15814283324.

The previous prime is 31628566649. The next prime is 31628566681. The reversal of 31628566652 is 25666582613.

It is a self number, because there is not a number n which added to its sum of digits gives 31628566652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3953570828 + ... + 3953570835.

It is an arithmetic number, because the mean of its divisors is an integer number (9224998608).

Almost surely, 2^31628566652 is an apocalyptic number.

It is an amenable number.

31628566652 is a deficient number, since it is larger than the sum of its proper divisors (23721424996).

31628566652 is a wasteful number, since it uses less digits than its factorization.

31628566652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7907141667 (or 7907141665 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The spelling of 31628566652 in words is "thirty-one billion, six hundred twenty-eight million, five hundred sixty-six thousand, six hundred fifty-two".