255318302820 has 96 divisors (see below), whose sum is σ = 821741453568. Its totient is φ = 58021120512.

The previous prime is 255318302819. The next prime is 255318302821. The reversal of 255318302820 is 28203813552.

It is an interprime number because it is at equal distance from previous prime (255318302819) and next prime (255318302821).

It is not an unprimeable number, because it can be changed into a prime (255318302821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1684279 + ... + 1829598.

It is an arithmetic number, because the mean of its divisors is an integer number (8559806808).

Almost surely, 2^255318302820 is an apocalyptic number.

255318302820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255318302820 is an abundant number, since it is smaller than the sum of its proper divisors (566423150748).

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

255318302820 is a wasteful number, since it uses less digits than its factorization.

255318302820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514069 (or 3514067 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 255318302820 in words is "two hundred fifty-five billion, three hundred eighteen million, three hundred two thousand, eight hundred twenty".