161836601816 has 48 divisors (see below), whose sum is σ = 319111304400. Its totient is φ = 76936304192.

The previous prime is 161836601813. The next prime is 161836601837. The reversal of 161836601816 is 618106638161.

161836601816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161836601813) 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 11 ways as a sum of consecutive naturals, for example, 592250 + ... + 821238.

It is an arithmetic number, because the mean of its divisors is an integer number (6648152175).

Almost surely, 2^161836601816 is an apocalyptic number.

It is an amenable number.

161836601816 is a deficient number, since it is larger than the sum of its proper divisors (157274702584).

161836601816 is a wasteful number, since it uses less digits than its factorization.

161836601816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229208 (or 229181 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 161836601816 in words is "one hundred sixty-one billion, eight hundred thirty-six million, six hundred one thousand, eight hundred sixteen".