161040536 has 24 divisors (see below), whose sum is σ = 312020460. Its totient is φ = 77919120.

The previous prime is 161040533. The next prime is 161040557. The reversal of 161040536 is 635040161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161040533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2786 + ... + 18161.

Almost surely, 2^161040536 is an apocalyptic number.

It is an amenable number.

161040536 is a deficient number, since it is larger than the sum of its proper divisors (150979924).

161040536 is a wasteful number, since it uses less digits than its factorization.

161040536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21015 (or 20980 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 161040536 is about 12690.1747820903. The cubic root of 161040536 is about 544.0578351861.

Adding to 161040536 its reverse (635040161), we get a palindrome (796080697).

The spelling of 161040536 in words is "one hundred sixty-one million, forty thousand, five hundred thirty-six".