12435436636 has 12 divisors (see below), whose sum is σ = 24870873328. Its totient is φ = 5329472832.

The previous prime is 12435436613. The next prime is 12435436661. The reversal of 12435436636 is 63663453421.

12435436636 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12435436592 and 12435436601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222061341 + ... + 222061396.

Almost surely, 2^12435436636 is an apocalyptic number.

It is an amenable number.

12435436636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12435436636 is a wasteful number, since it uses less digits than its factorization.

12435436636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444122748 (or 444122746 counting only the distinct ones).

The product of its digits is 933120, while the sum is 43.

The spelling of 12435436636 in words is "twelve billion, four hundred thirty-five million, four hundred thirty-six thousand, six hundred thirty-six".