71661355214 has 8 divisors (see below), whose sum is σ = 107688546408. Its totient is φ = 35765173080.

The previous prime is 71661355211. The next prime is 71661355223. The reversal of 71661355214 is 41255316617.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71661355214² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71661355211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32750897 + ... + 32753084.

It is an arithmetic number, because the mean of its divisors is an integer number (13461068301).

Almost surely, 2^71661355214 is an apocalyptic number.

71661355214 is a deficient number, since it is larger than the sum of its proper divisors (36027191194).

71661355214 is a wasteful number, since it uses less digits than its factorization.

71661355214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65504530.

The product of its digits is 151200, while the sum is 41.

The spelling of 71661355214 in words is "seventy-one billion, six hundred sixty-one million, three hundred fifty-five thousand, two hundred fourteen".