163861357532 has 12 divisors (see below), whose sum is σ = 287823390120. Its totient is φ = 81626103216.

The previous prime is 163861357523. The next prime is 163861357559. The reversal of 163861357532 is 235753168361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76142678 + ... + 76144829.

It is an arithmetic number, because the mean of its divisors is an integer number (23985282510).

Almost surely, 2^163861357532 is an apocalyptic number.

It is an amenable number.

163861357532 is a deficient number, since it is larger than the sum of its proper divisors (123962032588).

163861357532 is a wasteful number, since it uses less digits than its factorization.

163861357532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152287780 (or 152287778 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 50.

The spelling of 163861357532 in words is "one hundred sixty-three billion, eight hundred sixty-one million, three hundred fifty-seven thousand, five hundred thirty-two".