82278395168 has 18 divisors (see below), whose sum is σ = 161988785091. Its totient is φ = 41138386272.

The previous prime is 82278395161. The next prime is 82278395197. The reversal of 82278395168 is 86159387228.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 41139197584 + 41139197584 = 202828^2 + 202828^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=202828.

It is a super-2 number, since 2×82278395168² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82278395161) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1597271 + ... + 1647977.

Almost surely, 2^82278395168 is an apocalyptic number.

It is an amenable number.

82278395168 is a deficient number, since it is larger than the sum of its proper divisors (79710389923).

82278395168 is an frugal number, since it uses more digits than its factorization.

82278395168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101424 (or 50709 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The spelling of 82278395168 in words is "eighty-two billion, two hundred seventy-eight million, three hundred ninety-five thousand, one hundred sixty-eight".