255841910840 has 32 divisors (see below), whose sum is σ = 589031380080. Its totient is φ = 99956838912.

The previous prime is 255841910809. The next prime is 255841910869. The reversal of 255841910840 is 48019148552.

It is a congruent number.

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, 74370929 + ... + 74374368.

Almost surely, 2^255841910840 is an apocalyptic number.

255841910840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255841910840 is an abundant number, since it is smaller than the sum of its proper divisors (333189469240).

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

255841910840 is a wasteful number, since it uses less digits than its factorization.

255841910840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148745351 (or 148745347 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 255841910840 in words is "two hundred fifty-five billion, eight hundred forty-one million, nine hundred ten thousand, eight hundred forty".