255218709020356 has 27 divisors (see below), whose sum is σ = 446949161147629. Its totient is φ = 127519012684448.

The previous prime is 255218709020339. The next prime is 255218709020377. The reversal of 255218709020356 is 653020907812552.

The square root of 255218709020356 is 15975566.

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

It can be written as a sum of positive squares in only one way, i.e., 245952285973956 + 9266423046400 = 15682866^2 + 3044080^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255218709020297 and 255218709020306.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 87194637765 + ... + 87194640691.

Almost surely, 2^{255218709020356} is an apocalyptic number.

255218709020356 is the 15975566-th square number.

It is an amenable number.

255218709020356 is a deficient number, since it is larger than the sum of its proper divisors (191730452127273).

255218709020356 is an frugal number, since it uses more digits than its factorization.

255218709020356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316 (or 5658 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 255218709020356 in words is "two hundred fifty-five trillion, two hundred eighteen billion, seven hundred nine million, twenty thousand, three hundred fifty-six".