161130604012 has 24 divisors (see below), whose sum is σ = 330121239840. Its totient is φ = 67371680640.

The previous prime is 161130603979. The next prime is 161130604027. The reversal of 161130604012 is 210406031161.

It is a super-2 number, since 2×161130604012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 70177687 + ... + 70179982.

It is an arithmetic number, because the mean of its divisors is an integer number (13755051660).

Almost surely, 2^161130604012 is an apocalyptic number.

It is an amenable number.

161130604012 is an abundant number, since it is smaller than the sum of its proper divisors (168990635828).

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

161130604012 is a wasteful number, since it uses less digits than its factorization.

161130604012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140357721 (or 140357719 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 161130604012 its reverse (210406031161), we get a palindrome (371536635173).

The spelling of 161130604012 in words is "one hundred sixty-one billion, one hundred thirty million, six hundred four thousand, twelve".