255051221341240 has 32 divisors (see below), whose sum is σ = 579547082165760. Its totient is φ = 101010384688000.

The previous prime is 255051221341237. The next prime is 255051221341261. The reversal of 255051221341240 is 42143122150552.

It is a super-2 number, since 2×255051221341240² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255051221341240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31565741176 + ... + 31565749255.

It is an arithmetic number, because the mean of its divisors is an integer number (18110846317680).

Almost surely, 2^{255051221341240} is an apocalyptic number.

255051221341240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255051221341240 is an abundant number, since it is smaller than the sum of its proper divisors (324495860824520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255051221341240 is a wasteful number, since it uses less digits than its factorization.

255051221341240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63131490543 (or 63131490539 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 255051221341240 its reverse (42143122150552), we get a palindrome (297194343491792).

The spelling of 255051221341240 in words is "two hundred fifty-five trillion, fifty-one billion, two hundred twenty-one million, three hundred forty-one thousand, two hundred forty".