255121430424 has 64 divisors (see below), whose sum is σ = 729138931200. Its totient is φ = 72869781504.

The previous prime is 255121430423. The next prime is 255121430437. The reversal of 255121430424 is 424034121552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255121430423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331189 + ... + 787355.

It is an arithmetic number, because the mean of its divisors is an integer number (11392795800).

Almost surely, 2^255121430424 is an apocalyptic number.

255121430424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

255121430424 is an abundant number, since it is smaller than the sum of its proper divisors (474017500776).

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

255121430424 is a wasteful number, since it uses less digits than its factorization.

255121430424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459512 (or 459508 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 255121430424 its reverse (424034121552), we get a palindrome (679155551976).

The spelling of 255121430424 in words is "two hundred fifty-five billion, one hundred twenty-one million, four hundred thirty thousand, four hundred twenty-four".