206172700148 has 12 divisors (see below), whose sum is σ = 361591730052. Its totient is φ = 102860777280.

The previous prime is 206172700121. The next prime is 206172700169. The reversal of 206172700148 is 841007271602.

It can be written as a sum of positive squares in 2 ways, for example, as 65688664804 + 140484035344 = 256298^2 + 374812^2 .

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, 56391143 + ... + 56394798.

It is an arithmetic number, because the mean of its divisors is an integer number (30132644171).

Almost surely, 2^206172700148 is an apocalyptic number.

It is an amenable number.

206172700148 is a deficient number, since it is larger than the sum of its proper divisors (155419029904).

206172700148 is a wasteful number, since it uses less digits than its factorization.

206172700148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112786402 (or 112786400 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 206172700148 in words is "two hundred six billion, one hundred seventy-two million, seven hundred thousand, one hundred forty-eight".