72017207166 has 16 divisors (see below), whose sum is σ = 144079059600. Its totient is φ = 23998294848.

The previous prime is 72017207161. The next prime is 72017207201. The reversal of 72017207166 is 66170271027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72017207161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839231 + ... + 1877978.

It is an arithmetic number, because the mean of its divisors is an integer number (9004941225).

Almost surely, 2^72017207166 is an apocalyptic number.

72017207166 is an abundant number, since it is smaller than the sum of its proper divisors (72061852434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72017207166 is a wasteful number, since it uses less digits than its factorization.

72017207166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720443.

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 72017207166 in words is "seventy-two billion, seventeen million, two hundred seven thousand, one hundred sixty-six".