12889073223956 has 6 divisors (see below), whose sum is σ = 22555878141930. Its totient is φ = 6444536611976.

The previous prime is 12889073223889. The next prime is 12889073223989. The reversal of 12889073223956 is 65932237098821.

It can be written as a sum of positive squares in only one way, i.e., 12881997722500 + 7075501456 = 3589150^2 + 84116^2 .

It is a super-2 number, since 2×12889073223956² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12889073223892 and 12889073223901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611134152991 + ... + 1611134152998.

It is an arithmetic number, because the mean of its divisors is an integer number (3759313023655).

Almost surely, 2^{12889073223956} is an apocalyptic number.

It is an amenable number.

12889073223956 is a deficient number, since it is larger than the sum of its proper divisors (9666804917974).

12889073223956 is a wasteful number, since it uses less digits than its factorization.

12889073223956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222268305993 (or 3222268305991 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 12889073223956 in words is "twelve trillion, eight hundred eighty-nine billion, seventy-three million, two hundred twenty-three thousand, nine hundred fifty-six".