206128053351 has 18 divisors (see below), whose sum is σ = 327268508840. Its totient is φ = 124926092280.

The previous prime is 206128053317. The next prime is 206128053367. The reversal of 206128053351 is 153350821602.

206128053351 is a `hidden beast` number, since 2 + 0 + 612 + 8 + 0 + 5 + 3 + 35 + 1 = 666.

It is not a de Polignac number, because 206128053351 - 2²² = 206123859047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206128053301) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 94639891 + ... + 94642068.

Almost surely, 2^206128053351 is an apocalyptic number.

206128053351 is a deficient number, since it is larger than the sum of its proper divisors (121140455489).

206128053351 is a wasteful number, since it uses less digits than its factorization.

206128053351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189281987 (or 189281973 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 206128053351 its reverse (153350821602), we get a palindrome (359478874953).

The spelling of 206128053351 in words is "two hundred six billion, one hundred twenty-eight million, fifty-three thousand, three hundred fifty-one".