161140223999 has 8 divisors (see below), whose sum is σ = 169632506880. Its totient is φ = 152649063000.

The previous prime is 161140223989. The next prime is 161140224013. The reversal of 161140223999 is 999322041161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161140223999 - 2³² = 156845256703 is a prime.

It is a super-3 number, since 3×161140223999³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161140223989) by changing a digit.

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, 22784 + ... + 568154.

It is an arithmetic number, because the mean of its divisors is an integer number (21204063360).

Almost surely, 2^161140223999 is an apocalyptic number.

161140223999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

161140223999 is a deficient number, since it is larger than the sum of its proper divisors (8492282881).

161140223999 is a wasteful number, since it uses less digits than its factorization.

161140223999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560941.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 161140223999 in words is "one hundred sixty-one billion, one hundred forty million, two hundred twenty-three thousand, nine hundred ninety-nine".