12693650856 has 32 divisors (see below), whose sum is σ = 31747766400. Its totient is φ = 4229398400.

The previous prime is 12693650839. The next prime is 12693650861. The reversal of 12693650856 is 65805639621.

It is a super-2 number, since 2×12693650856² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12693650799 and 12693650808.

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 in 7 ways as a sum of consecutive naturals, for example, 56061 + ... + 168908.

It is an arithmetic number, because the mean of its divisors is an integer number (992117700).

Almost surely, 2^12693650856 is an apocalyptic number.

It is an amenable number.

12693650856 is an abundant number, since it is smaller than the sum of its proper divisors (19054115544).

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

12693650856 is a wasteful number, since it uses less digits than its factorization.

12693650856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227329 (or 227325 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 12693650856 in words is "twelve billion, six hundred ninety-three million, six hundred fifty thousand, eight hundred fifty-six".