161153643733525 has 96 divisors (see below), whose sum is σ = 209593475980416. Its totient is φ = 122827785600000.

The previous prime is 161153643733519. The next prime is 161153643733529. The reversal of 161153643733525 is 525337346351161.

It is not a de Polignac number, because 161153643733525 - 2⁹ = 161153643733013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161153643733529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2832645330 + ... + 2832702220.

It is an arithmetic number, because the mean of its divisors is an integer number (2183265374796).

Almost surely, 2^{161153643733525} is an apocalyptic number.

It is an amenable number.

161153643733525 is a deficient number, since it is larger than the sum of its proper divisors (48439832246891).

161153643733525 is a wasteful number, since it uses less digits than its factorization.

161153643733525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57463 (or 57458 counting only the distinct ones).

The product of its digits is 20412000, while the sum is 55.

The spelling of 161153643733525 in words is "one hundred sixty-one trillion, one hundred fifty-three billion, six hundred forty-three million, seven hundred thirty-three thousand, five hundred twenty-five".