255617203396 has 81 divisors (see below), whose sum is σ = 485587108461. Its totient is φ = 117724688928.

The previous prime is 255617203393. The next prime is 255617203451. The reversal of 255617203396 is 693302716552.

The square root of 255617203396 is 505586.

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., 134039460996 + 121577742400 = 366114^2 + 348680^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255617203393) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 674451535 + ... + 674451913.

Almost surely, 2^255617203396 is an apocalyptic number.

255617203396 is the 505586-th square number.

It is an amenable number.

255617203396 is a deficient number, since it is larger than the sum of its proper divisors (229969905065).

255617203396 is an equidigital number, since it uses as much as digits as its factorization.

255617203396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 49.

Multiplying 255617203396 by its sum of digits (49), we get a square (12525242966404 = 3539102²).

The spelling of 255617203396 in words is "two hundred fifty-five billion, six hundred seventeen million, two hundred three thousand, three hundred ninety-six".