207216550172 has 12 divisors (see below), whose sum is σ = 365237805240. Its totient is φ = 102862891536.

The previous prime is 207216550169. The next prime is 207216550187. The reversal of 207216550172 is 271055612702.

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, 186345263 + ... + 186346374.

It is an arithmetic number, because the mean of its divisors is an integer number (30436483770).

Almost surely, 2^207216550172 is an apocalyptic number.

It is an amenable number.

207216550172 is a deficient number, since it is larger than the sum of its proper divisors (158021255068).

207216550172 is a wasteful number, since it uses less digits than its factorization.

207216550172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372691780 (or 372691778 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 207216550172 in words is "two hundred seven billion, two hundred sixteen million, five hundred fifty thousand, one hundred seventy-two".