63651563205212 has 24 divisors (see below), whose sum is σ = 111713655737376. Its totient is φ = 31733506280448.

The previous prime is 63651563205163. The next prime is 63651563205283. The reversal of 63651563205212 is 21250236515636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14350733 + ... + 18255044.

It is an arithmetic number, because the mean of its divisors is an integer number (4654735655724).

Almost surely, 2^{63651563205212} is an apocalyptic number.

It is an amenable number.

63651563205212 is a deficient number, since it is larger than the sum of its proper divisors (48062092532164).

63651563205212 is a wasteful number, since it uses less digits than its factorization.

63651563205212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32607197 (or 32607195 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 63651563205212 in words is "sixty-three trillion, six hundred fifty-one billion, five hundred sixty-three million, two hundred five thousand, two hundred twelve".