161611101485539 has 8 divisors (see below), whose sum is σ = 161633792661120. Its totient is φ = 161588411737536.

The previous prime is 161611101485497. The next prime is 161611101485611. The reversal of 161611101485539 is 935584101116161.

161611101485539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161611101485539 - 2⁹ = 161611101485027 is a prime.

It is a super-2 number, since 2×161611101485539² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161611105485539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237040567 + ... + 237721375.

It is an arithmetic number, because the mean of its divisors is an integer number (20204224082640).

Almost surely, 2^{161611101485539} is an apocalyptic number.

161611101485539 is a deficient number, since it is larger than the sum of its proper divisors (22691175581).

161611101485539 is a wasteful number, since it uses less digits than its factorization.

161611101485539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713789.

The product of its (nonzero) digits is 777600, while the sum is 52.

The spelling of 161611101485539 in words is "one hundred sixty-one trillion, six hundred eleven billion, one hundred one million, four hundred eighty-five thousand, five hundred thirty-nine".