255453628440 has 64 divisors (see below), whose sum is σ = 787073355360. Its totient is φ = 66279859200.

The previous prime is 255453628421. The next prime is 255453628483. The reversal of 255453628440 is 44826354552.

It is a self number, because there is not a number n which added to its sum of digits gives 255453628440.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 28762861 + ... + 28771740.

Almost surely, 2^255453628440 is an apocalyptic number.

255453628440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255453628440 is an abundant number, since it is smaller than the sum of its proper divisors (531619726920).

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

255453628440 is a wasteful number, since it uses less digits than its factorization.

255453628440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57534652 (or 57534648 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 48.

The spelling of 255453628440 in words is "two hundred fifty-five billion, four hundred fifty-three million, six hundred twenty-eight thousand, four hundred forty".