161102249123 has 4 divisors (see below), whose sum is σ = 161126232960. Its totient is φ = 161078265288.

The previous prime is 161102249111. The next prime is 161102249149. The reversal of 161102249123 is 321942201161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161102249123 - 2⁴ = 161102249107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161102249123.

It is not an unprimeable number, because it can be changed into a prime (161102249323) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11981840 + ... + 11995277.

It is an arithmetic number, because the mean of its divisors is an integer number (40281558240).

Almost surely, 2^161102249123 is an apocalyptic number.

161102249123 is a deficient number, since it is larger than the sum of its proper divisors (23983837).

161102249123 is an equidigital number, since it uses as much as digits as its factorization.

161102249123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23983836.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 161102249123 in words is "one hundred sixty-one billion, one hundred two million, two hundred forty-nine thousand, one hundred twenty-three".