255421435305102 has 64 divisors (see below), whose sum is σ = 591368982865920. Its totient is φ = 72780364738400.

The previous prime is 255421435305083. The next prime is 255421435305103. The reversal of 255421435305102 is 201503534124552.

It is a super-2 number, since 2×255421435305102² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255421435305103) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1425858024 + ... + 1426037147.

It is an arithmetic number, because the mean of its divisors is an integer number (9240140357280).

Almost surely, 2^{255421435305102} is an apocalyptic number.

255421435305102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

255421435305102 is an abundant number, since it is smaller than the sum of its proper divisors (335947547560818).

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

255421435305102 is a wasteful number, since it uses less digits than its factorization.

255421435305102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851895269.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 255421435305102 its reverse (201503534124552), we get a palindrome (456924969429654).

The spelling of 255421435305102 in words is "two hundred fifty-five trillion, four hundred twenty-one billion, four hundred thirty-five million, three hundred five thousand, one hundred two".