161235534236 has 24 divisors (see below), whose sum is σ = 322483061376. Its totient is φ = 69098373360.

The previous prime is 161235534227. The next prime is 161235534253. The reversal of 161235534236 is 632435532161.

It is a junction number, because it is equal to n+sod(n) for n = 161235534193 and 161235534202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791555 + ... + 974181.

It is an arithmetic number, because the mean of its divisors is an integer number (13436794224).

Almost surely, 2^161235534236 is an apocalyptic number.

It is an amenable number.

161235534236 is an abundant number, since it is smaller than the sum of its proper divisors (161247527140).

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

161235534236 is a wasteful number, since it uses less digits than its factorization.

161235534236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214169 (or 214167 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The spelling of 161235534236 in words is "one hundred sixty-one billion, two hundred thirty-five million, five hundred thirty-four thousand, two hundred thirty-six".