163665505214 has 16 divisors (see below), whose sum is σ = 246030589728. Its totient is φ = 81655368192.

The previous prime is 163665505187. The next prime is 163665505243. The reversal of 163665505214 is 412505566361.

It is a super-2 number, since 2×163665505214² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7490834 + ... + 7512650.

It is an arithmetic number, because the mean of its divisors is an integer number (15376911858).

Almost surely, 2^163665505214 is an apocalyptic number.

163665505214 is a deficient number, since it is larger than the sum of its proper divisors (82365084514).

163665505214 is a wasteful number, since it uses less digits than its factorization.

163665505214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29779.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 163665505214 in words is "one hundred sixty-three billion, six hundred sixty-five million, five hundred five thousand, two hundred fourteen".