161616550495 has 8 divisors (see below), whose sum is σ = 194124747600. Its totient is φ = 129169982400.

The previous prime is 161616550493. The next prime is 161616550499. The reversal of 161616550495 is 594055616161.

161616550495 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 161616550495 - 2¹ = 161616550493 is a prime.

It is a super-2 number, since 2×161616550495² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161616550493) 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, 15401481 + ... + 15411970.

It is an arithmetic number, because the mean of its divisors is an integer number (24265593450).

Almost surely, 2^161616550495 is an apocalyptic number.

161616550495 is a deficient number, since it is larger than the sum of its proper divisors (32508197105).

161616550495 is a wasteful number, since it uses less digits than its factorization.

161616550495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30814505.

The product of its (nonzero) digits is 972000, while the sum is 49.

It can be divided in two parts, 16161 and 6550495, that added together give a palindrome (6566656).

The spelling of 161616550495 in words is "one hundred sixty-one billion, six hundred sixteen million, five hundred fifty thousand, four hundred ninety-five".