161102249125 has 16 divisors (see below), whose sum is σ = 203809804848. Its totient is φ = 127116288000.

The previous prime is 161102249111. The next prime is 161102249149. The reversal of 161102249125 is 521942201161.

It can be written as a sum of positive squares in 8 ways, for example, as 21649296769 + 139452952356 = 147137^2 + 373434^2 .

It is not a de Polignac number, because 161102249125 - 2⁵ = 161102249093 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 8818396 + ... + 8836645.

It is an arithmetic number, because the mean of its divisors is an integer number (12738112803).

Almost surely, 2^161102249125 is an apocalyptic number.

It is an amenable number.

161102249125 is a deficient number, since it is larger than the sum of its proper divisors (42707555723).

161102249125 is an equidigital number, since it uses as much as digits as its factorization.

161102249125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17655129 (or 17655119 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 161102249125 in words is "one hundred sixty-one billion, one hundred two million, two hundred forty-nine thousand, one hundred twenty-five".