67798265161 has 9 divisors (see below), whose sum is σ = 74525208429. Its totient is φ = 61632182700.

The previous prime is 67798265147. The next prime is 67798265173. The reversal of 67798265161 is 16156289776.

The square root of 67798265161 is 260381.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 67798265161 - 2⁹ = 67798264649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67798265096 and 67798265105.

It is not an unprimeable number, because it can be changed into a prime (67798265191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2852356 + ... + 2876026.

Almost surely, 2^67798265161 is an apocalyptic number.

67798265161 is the 260381-st square number.

67798265161 is the 130191-st centered octagonal number.

It is an amenable number.

67798265161 is a deficient number, since it is larger than the sum of its proper divisors (6726943268).

67798265161 is an frugal number, since it uses more digits than its factorization.

67798265161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47364 (or 23682 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 58.

The spelling of 67798265161 in words is "sixty-seven billion, seven hundred ninety-eight million, two hundred sixty-five thousand, one hundred sixty-one".