12455568436 has 6 divisors (see below), whose sum is σ = 21797244770. Its totient is φ = 6227784216.

The previous prime is 12455568421. The next prime is 12455568443. The reversal of 12455568436 is 63486555421.

It can be written as a sum of positive squares in only one way, i.e., 10783576336 + 1671992100 = 103844^2 + 40890^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12455568436.

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, 1556946051 + ... + 1556946058.

Almost surely, 2^12455568436 is an apocalyptic number.

It is an amenable number.

12455568436 is a deficient number, since it is larger than the sum of its proper divisors (9341676334).

12455568436 is a wasteful number, since it uses less digits than its factorization.

12455568436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113892113 (or 3113892111 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 49.

The spelling of 12455568436 in words is "twelve billion, four hundred fifty-five million, five hundred sixty-eight thousand, four hundred thirty-six".