161304460412 has 24 divisors (see below), whose sum is σ = 295320271680. Its totient is φ = 77010947840.

The previous prime is 161304460409. The next prime is 161304460463. The reversal of 161304460412 is 214064403161.

It is a super-3 number, since 3×161304460412³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10455737 + ... + 10471152.

It is an arithmetic number, because the mean of its divisors is an integer number (12305011320).

Almost surely, 2^161304460412 is an apocalyptic number.

It is an amenable number.

161304460412 is a deficient number, since it is larger than the sum of its proper divisors (134015811268).

161304460412 is a wasteful number, since it uses less digits than its factorization.

161304460412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926981 (or 20926979 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 161304460412 its reverse (214064403161), we get a palindrome (375368863573).

The spelling of 161304460412 in words is "one hundred sixty-one billion, three hundred four million, four hundred sixty thousand, four hundred twelve".