161569286116 has 48 divisors (see below), whose sum is σ = 328047560064. Its totient is φ = 68194849536.

The previous prime is 161569286077. The next prime is 161569286119. The reversal of 161569286116 is 611682965161.

It is a super-2 number, since 2×161569286116² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161569286119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1338186 + ... + 1453918.

It is an arithmetic number, because the mean of its divisors is an integer number (6834324168).

Almost surely, 2^161569286116 is an apocalyptic number.

It is an amenable number.

161569286116 is an abundant number, since it is smaller than the sum of its proper divisors (166478273948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161569286116 is a wasteful number, since it uses less digits than its factorization.

161569286116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116500 (or 116498 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The spelling of 161569286116 in words is "one hundred sixty-one billion, five hundred sixty-nine million, two hundred eighty-six thousand, one hundred sixteen".