201866672050 has 24 divisors (see below), whose sum is σ = 375485043312. Its totient is φ = 80743866000.

The previous prime is 201866671997. The next prime is 201866672069. The reversal of 201866672050 is 50276668102.

It is a junction number, because it is equal to n+sod(n) for n = 201866671988 and 201866672006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1976745 + ... + 2076355.

It is an arithmetic number, because the mean of its divisors is an integer number (15645210138).

Almost surely, 2^201866672050 is an apocalyptic number.

201866672050 is a deficient number, since it is larger than the sum of its proper divisors (173618371262).

201866672050 is a wasteful number, since it uses less digits than its factorization.

201866672050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140154 (or 140149 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 201866672050 in words is "two hundred one billion, eight hundred sixty-six million, six hundred seventy-two thousand, fifty".