201688838355 has 16 divisors (see below), whose sum is σ = 341684620704. Its totient is φ = 101239887360.

The previous prime is 201688838297. The next prime is 201688838359. The reversal of 201688838355 is 553838886102.

It is a happy number.

It is not a de Polignac number, because 201688838355 - 2⁷ = 201688838227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201688838295 and 201688838304.

It is not an unprimeable number, because it can be changed into a prime (201688838359) by changing a digit.

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, 395468056 + ... + 395468565.

It is an arithmetic number, because the mean of its divisors is an integer number (21355288794).

Almost surely, 2^201688838355 is an apocalyptic number.

201688838355 is a deficient number, since it is larger than the sum of its proper divisors (139995782349).

201688838355 is a wasteful number, since it uses less digits than its factorization.

201688838355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790936646.

The product of its (nonzero) digits is 11059200, while the sum is 57.

The spelling of 201688838355 in words is "two hundred one billion, six hundred eighty-eight million, eight hundred thirty-eight thousand, three hundred fifty-five".