255040303621 has 8 divisors (see below), whose sum is σ = 260459458200. Its totient is φ = 249677894400.

The previous prime is 255040303613. The next prime is 255040303667. The reversal of 255040303621 is 126303040552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127295536225 + 127744767396 = 356785^2 + 357414^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255040303621 - 2³ = 255040303613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255040303691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14177256 + ... + 14195233.

It is an arithmetic number, because the mean of its divisors is an integer number (32557432275).

Almost surely, 2^255040303621 is an apocalyptic number.

It is an amenable number.

255040303621 is a deficient number, since it is larger than the sum of its proper divisors (5419154579).

255040303621 is a wasteful number, since it uses less digits than its factorization.

255040303621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28372679.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 255040303621 in words is "two hundred fifty-five billion, forty million, three hundred three thousand, six hundred twenty-one".