161455441512 has 32 divisors (see below), whose sum is σ = 403677139680. Its totient is φ = 53813342400.

The previous prime is 161455441507. The next prime is 161455441529. The reversal of 161455441512 is 215144554161.

It is a happy number.

It is a super-3 number, since 3×161455441512³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60183 + ... + 571430.

It is an arithmetic number, because the mean of its divisors is an integer number (12614910615).

Almost surely, 2^161455441512 is an apocalyptic number.

161455441512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161455441512 is an abundant number, since it is smaller than the sum of its proper divisors (242221698168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161455441512 is a wasteful number, since it uses less digits than its factorization.

161455441512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642273 (or 642269 counting only the distinct ones).

The product of its digits is 96000, while the sum is 39.

Adding to 161455441512 its reverse (215144554161), we get a palindrome (376599995673).

The spelling of 161455441512 in words is "one hundred sixty-one billion, four hundred fifty-five million, four hundred forty-one thousand, five hundred twelve".