161205462016 has 33 divisors (see below), whose sum is σ = 322279182579. Its totient is φ = 80596306944.

The previous prime is 161205461971. The next prime is 161205462031. The reversal of 161205462016 is 610264502161.

The square root of 161205462016 is 401504.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12841855 + ... + 12854401.

Almost surely, 2^161205462016 is an apocalyptic number.

161205462016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

161205462016 is the 401504-th square number.

It is an amenable number.

161205462016 is a deficient number, since it is larger than the sum of its proper divisors (161073720563).

161205462016 is an frugal number, since it uses more digits than its factorization.

161205462016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25114 (or 12549 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 161205462016 its reverse (610264502161), we get a palindrome (771469964177).

The spelling of 161205462016 in words is "one hundred sixty-one billion, two hundred five million, four hundred sixty-two thousand, sixteen".