203243657696 has 24 divisors (see below), whose sum is σ = 400221005184. Its totient is φ = 101600227840.

The previous prime is 203243657689. The next prime is 203243657719. The reversal of 203243657696 is 696756342302.

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, 521600 + ... + 823743.

It is an arithmetic number, because the mean of its divisors is an integer number (16675875216).

Almost surely, 2^203243657696 is an apocalyptic number.

It is an amenable number.

203243657696 is a deficient number, since it is larger than the sum of its proper divisors (196977347488).

203243657696 is a wasteful number, since it uses less digits than its factorization.

203243657696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350074 (or 1350066 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 53.

Adding to 203243657696 its reverse (696756342302), we get a palindrome (899999999998).

The spelling of 203243657696 in words is "two hundred three billion, two hundred forty-three million, six hundred fifty-seven thousand, six hundred ninety-six".