161660063159 has 8 divisors (see below), whose sum is σ = 184771926528. Its totient is φ = 138552591960.

The previous prime is 161660063137. The next prime is 161660063221. The reversal of 161660063159 is 951360066161.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161660063159 is a prime.

It is a super-2 number, since 2×161660063159² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161660063459) 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, 1018787 + ... + 1166724.

It is an arithmetic number, because the mean of its divisors is an integer number (23096490816).

Almost surely, 2^161660063159 is an apocalyptic number.

161660063159 is a deficient number, since it is larger than the sum of its proper divisors (23111863369).

161660063159 is a wasteful number, since it uses less digits than its factorization.

161660063159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196085.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 161660063159 in words is "one hundred sixty-one billion, six hundred sixty million, sixty-three thousand, one hundred fifty-nine".