161933950664206 has 16 divisors (see below), whose sum is σ = 282838814099424. Its totient is φ = 68090825615904.

The previous prime is 161933950664197. The next prime is 161933950664207. The reversal of 161933950664206 is 602466059339161.

161933950664206 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161933950664206² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161933950664207) 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, 109119912105 + ... + 109119913588.

It is an arithmetic number, because the mean of its divisors is an integer number (17677425881214).

Almost surely, 2^{161933950664206} is an apocalyptic number.

161933950664206 is a deficient number, since it is larger than the sum of its proper divisors (120904863435218).

161933950664206 is a wasteful number, since it uses less digits than its factorization.

161933950664206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218239825755.

The product of its (nonzero) digits is 37791360, while the sum is 61.

The spelling of 161933950664206 in words is "one hundred sixty-one trillion, nine hundred thirty-three billion, nine hundred fifty million, six hundred sixty-four thousand, two hundred six".