161616149297 has 8 divisors (see below), whose sum is σ = 161728690752. Its totient is φ = 161503650000.

The previous prime is 161616149281. The next prime is 161616149327. The reversal of 161616149297 is 792941616161.

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

It is a cyclic number.

It is not a de Polignac number, because 161616149297 - 2⁴ = 161616149281 is a prime.

It is a super-2 number, since 2×161616149297² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161616149237) 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 7 ways as a sum of consecutive naturals, for example, 11746172 + ... + 11759922.

It is an arithmetic number, because the mean of its divisors is an integer number (20216086344).

Almost surely, 2^161616149297 is an apocalyptic number.

It is an amenable number.

161616149297 is a deficient number, since it is larger than the sum of its proper divisors (112541455).

161616149297 is a wasteful number, since it uses less digits than its factorization.

161616149297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21079.

The product of its digits is 979776, while the sum is 53.

The spelling of 161616149297 in words is "one hundred sixty-one billion, six hundred sixteen million, one hundred forty-nine thousand, two hundred ninety-seven".