161203339738 has 32 divisors (see below), whose sum is σ = 291039868800. Its totient is φ = 65417989824.

The previous prime is 161203339733. The next prime is 161203339747. The reversal of 161203339738 is 837933302161.

161203339738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161203339733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379468 + ... + 682936.

It is an arithmetic number, because the mean of its divisors is an integer number (9094995900).

Almost surely, 2^161203339738 is an apocalyptic number.

161203339738 is a deficient number, since it is larger than the sum of its proper divisors (129836529062).

161203339738 is a wasteful number, since it uses less digits than its factorization.

161203339738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305494.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 161203339738 in words is "one hundred sixty-one billion, two hundred three million, three hundred thirty-nine thousand, seven hundred thirty-eight".