161003594156 has 6 divisors (see below), whose sum is σ = 281756289780. Its totient is φ = 80501797076.

The previous prime is 161003594149. The next prime is 161003594159. The reversal of 161003594156 is 651495300161.

It is a super-2 number, since 2×161003594156² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161003594159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125449266 + ... + 20125449273.

It is an arithmetic number, because the mean of its divisors is an integer number (46959381630).

Almost surely, 2^161003594156 is an apocalyptic number.

It is an amenable number.

161003594156 is a deficient number, since it is larger than the sum of its proper divisors (120752695624).

161003594156 is a wasteful number, since it uses less digits than its factorization.

161003594156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40250898543 (or 40250898541 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 161003594156 in words is "one hundred sixty-one billion, three million, five hundred ninety-four thousand, one hundred fifty-six".