161666052651014 has 8 divisors (see below), whose sum is σ = 242521247313480. Its totient is φ = 80825636879856.

The previous prime is 161666052651011. The next prime is 161666052651053. The reversal of 161666052651014 is 410156250666161.

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

It is a super-2 number, since 2×161666052651014² (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 (161666052651011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3694695479 + ... + 3694739234.

It is an arithmetic number, because the mean of its divisors is an integer number (30315155914185).

Almost surely, 2^{161666052651014} is an apocalyptic number.

161666052651014 is a deficient number, since it is larger than the sum of its proper divisors (80855194662466).

161666052651014 is a wasteful number, since it uses less digits than its factorization.

161666052651014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7389445654.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 161666052651014 in words is "one hundred sixty-one trillion, six hundred sixty-six billion, fifty-two million, six hundred fifty-one thousand, fourteen".