161405536767 has 8 divisors (see below), whose sum is σ = 215225928624. Its totient is φ = 107594418048.

The previous prime is 161405536753. The next prime is 161405536829. The reversal of 161405536767 is 767635504161.

161405536767 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 not a de Polignac number, because 161405536767 - 2¹⁵ = 161405503999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161405532767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277568 + ... + 2347365.

It is an arithmetic number, because the mean of its divisors is an integer number (26903241078).

Almost surely, 2^161405536767 is an apocalyptic number.

161405536767 is a deficient number, since it is larger than the sum of its proper divisors (53820391857).

161405536767 is a wasteful number, since it uses less digits than its factorization.

161405536767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636569.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 161405536767 in words is "one hundred sixty-one billion, four hundred five million, five hundred thirty-six thousand, seven hundred sixty-seven".