67228448161 has 16 divisors (see below), whose sum is σ = 80704032768. Its totient is φ = 54753930000.

The previous prime is 67228448159. The next prime is 67228448213. The reversal of 67228448161 is 16184482276.

It is a happy number.

67228448161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 67228448161 - 2¹ = 67228448159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67228440161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1358365 + ... + 1406986.

It is an arithmetic number, because the mean of its divisors is an integer number (5044002048).

Almost surely, 2^67228448161 is an apocalyptic number.

It is an amenable number.

67228448161 is a deficient number, since it is larger than the sum of its proper divisors (13475584607).

67228448161 is a wasteful number, since it uses less digits than its factorization.

67228448161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765532.

The product of its digits is 1032192, while the sum is 49.

The spelling of 67228448161 in words is "sixty-seven billion, two hundred twenty-eight million, four hundred forty-eight thousand, one hundred sixty-one".