10663657212 has 24 divisors (see below), whose sum is σ = 26795856976. Its totient is φ = 3281125248.

The previous prime is 10663657211. The next prime is 10663657219. The reversal of 10663657212 is 21275636601.

It is a super-2 number, since 2×10663657212² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10663657211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34178233 + ... + 34178544.

Almost surely, 2^10663657212 is an apocalyptic number.

10663657212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10663657212 is an abundant number, since it is smaller than the sum of its proper divisors (16132199764).

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

10663657212 is a wasteful number, since it uses less digits than its factorization.

10663657212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68356797 (or 68356795 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 10663657212 in words is "ten billion, six hundred sixty-three million, six hundred fifty-seven thousand, two hundred twelve".