65079778228 has 12 divisors (see below), whose sum is σ = 114061915492. Its totient is φ = 32490659520.

The previous prime is 65079778217. The next prime is 65079778237. The reversal of 65079778228 is 82287797056.

It can be written as a sum of positive squares in 2 ways, for example, as 50130314404 + 14949463824 = 223898^2 + 122268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12304425 + ... + 12309712.

Almost surely, 2^65079778228 is an apocalyptic number.

It is an amenable number.

65079778228 is a deficient number, since it is larger than the sum of its proper divisors (48982137264).

65079778228 is a wasteful number, since it uses less digits than its factorization.

65079778228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24614802 (or 24614800 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 65079778228 in words is "sixty-five billion, seventy-nine million, seven hundred seventy-eight thousand, two hundred twenty-eight".