200123126536 has 16 divisors (see below), whose sum is σ = 375483906000. Its totient is φ = 99994084944.

The previous prime is 200123126521. The next prime is 200123126549. The reversal of 200123126536 is 635621321002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 200123126498 and 200123126507.

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, 8422186 + ... + 8445913.

It is an arithmetic number, because the mean of its divisors is an integer number (23467744125).

Almost surely, 2^200123126536 is an apocalyptic number.

It is an amenable number.

200123126536 is a deficient number, since it is larger than the sum of its proper divisors (175360779464).

200123126536 is a wasteful number, since it uses less digits than its factorization.

200123126536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16869588 (or 16869584 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 200123126536 its reverse (635621321002), we get a palindrome (835744447538).

The spelling of 200123126536 in words is "two hundred billion, one hundred twenty-three million, one hundred twenty-six thousand, five hundred thirty-six".