243236620636 has 24 divisors (see below), whose sum is σ = 450894666096. Its totient is φ = 114415653120.

The previous prime is 243236620591. The next prime is 243236620651. The reversal of 243236620636 is 636026632342.

It is a junction number, because it is equal to n+sod(n) for n = 243236620592 and 243236620601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598530 + ... + 919081.

It is an arithmetic number, because the mean of its divisors is an integer number (18787277754).

Almost surely, 2^243236620636 is an apocalyptic number.

It is an amenable number.

243236620636 is a deficient number, since it is larger than the sum of its proper divisors (207658045460).

243236620636 is a wasteful number, since it uses less digits than its factorization.

243236620636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519989 (or 1519987 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 43.

The spelling of 243236620636 in words is "two hundred forty-three billion, two hundred thirty-six million, six hundred twenty thousand, six hundred thirty-six".