161430121307 has 32 divisors (see below), whose sum is σ = 199994941440. Its totient is φ = 126883584000.

The previous prime is 161430121273. The next prime is 161430121337. The reversal of 161430121307 is 703121034161.

It is a cyclic number.

It is not a de Polignac number, because 161430121307 - 2¹⁴ = 161430104923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161430121307.

It is not an unprimeable number, because it can be changed into a prime (161430121337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13183694 + ... + 13195932.

It is an arithmetic number, because the mean of its divisors is an integer number (6249841920).

Almost surely, 2^161430121307 is an apocalyptic number.

161430121307 is a deficient number, since it is larger than the sum of its proper divisors (38564820133).

161430121307 is a wasteful number, since it uses less digits than its factorization.

161430121307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13203.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 161430121307 its reverse (703121034161), we get a palindrome (864551155468).

The spelling of 161430121307 in words is "one hundred sixty-one billion, four hundred thirty million, one hundred twenty-one thousand, three hundred seven".