255535443533440 has 64 divisors (see below), whose sum is σ = 698159336808960. Its totient is φ = 87612152067072.

The previous prime is 255535443533413. The next prime is 255535443533521. The reversal of 255535443533440 is 44335344535552.

255535443533440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28519576272 + ... + 28519585231.

It is an arithmetic number, because the mean of its divisors is an integer number (10908739637640).

Almost surely, 2^{255535443533440} is an apocalyptic number.

255535443533440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255535443533440 is an abundant number, since it is smaller than the sum of its proper divisors (442623893275520).

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

255535443533440 is an equidigital number, since it uses as much as digits as its factorization.

255535443533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57039161529 (or 57039161517 counting only the distinct ones).

The product of its (nonzero) digits is 129600000, while the sum is 55.

The spelling of 255535443533440 in words is "two hundred fifty-five trillion, five hundred thirty-five billion, four hundred forty-three million, five hundred thirty-three thousand, four hundred forty".