161430345645 has 32 divisors (see below), whose sum is σ = 273511779840. Its totient is φ = 81022878720.

The previous prime is 161430345631. The next prime is 161430345653. The reversal of 161430345645 is 546543034161.

It is a happy number.

It is not a de Polignac number, because 161430345645 - 2¹¹ = 161430343597 is a prime.

It is a super-3 number, since 3×161430345645³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161430345597 and 161430345606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2752780 + ... + 2810810.

It is an arithmetic number, because the mean of its divisors is an integer number (8547243120).

Almost surely, 2^161430345645 is an apocalyptic number.

161430345645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161430345645 is a deficient number, since it is larger than the sum of its proper divisors (112081434195).

161430345645 is a wasteful number, since it uses less digits than its factorization.

161430345645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68965.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 161430345645 in words is "one hundred sixty-one billion, four hundred thirty million, three hundred forty-five thousand, six hundred forty-five".