161116242036564 has 12 divisors (see below), whose sum is σ = 375937898085344. Its totient is φ = 53705414012184.

The previous prime is 161116242036559. The next prime is 161116242036587. The reversal of 161116242036564 is 465630242611161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6713176751512 + ... + 6713176751535.

Almost surely, 2^{161116242036564} is an apocalyptic number.

It is an amenable number.

161116242036564 is an abundant number, since it is smaller than the sum of its proper divisors (214821656048780).

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

161116242036564 is a wasteful number, since it uses less digits than its factorization.

161116242036564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426353503054 (or 13426353503052 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 161116242036564 in words is "one hundred sixty-one trillion, one hundred sixteen billion, two hundred forty-two million, thirty-six thousand, five hundred sixty-four".