200642720405 has 16 divisors (see below), whose sum is σ = 256498311744. Its totient is φ = 150145332480.

The previous prime is 200642720357. The next prime is 200642720459. The reversal of 200642720405 is 504027246002.

It is a de Polignac number, because none of the positive numbers 2^k-200642720405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7226951 + ... + 7254660.

It is an arithmetic number, because the mean of its divisors is an integer number (16031144484).

Almost surely, 2^200642720405 is an apocalyptic number.

It is an amenable number.

200642720405 is a deficient number, since it is larger than the sum of its proper divisors (55855591339).

200642720405 is a wasteful number, since it uses less digits than its factorization.

200642720405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14481796.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 200642720405 its reverse (504027246002), we get a palindrome (704669966407).

The spelling of 200642720405 in words is "two hundred billion, six hundred forty-two million, seven hundred twenty thousand, four hundred five".