255030335020021 has 8 divisors (see below), whose sum is σ = 287808528549600. Its totient is φ = 223851077760240.

The previous prime is 255030335019979. The next prime is 255030335020093. The reversal of 255030335020021 is 120020533030552.

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

It is a cyclic number.

It is not a de Polignac number, because 255030335020021 - 2¹¹ = 255030335017973 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 (255030335020621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399734067111 + ... + 399734067748.

It is an arithmetic number, because the mean of its divisors is an integer number (35976066068700).

Almost surely, 2^{255030335020021} is an apocalyptic number.

It is an amenable number.

255030335020021 is a deficient number, since it is larger than the sum of its proper divisors (32778193529579).

255030335020021 is a wasteful number, since it uses less digits than its factorization.

255030335020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799468134899.

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 255030335020021 its reverse (120020533030552), we get a palindrome (375050868050573).

The spelling of 255030335020021 in words is "two hundred fifty-five trillion, thirty billion, three hundred thirty-five million, twenty thousand, twenty-one".