255305302778 has 16 divisors (see below), whose sum is σ = 384031307520. Its totient is φ = 127295064000.

The previous prime is 255305302753. The next prime is 255305302801. The reversal of 255305302778 is 877203503552.

It is a happy 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, 2646533 + ... + 2741303.

It is an arithmetic number, because the mean of its divisors is an integer number (24001956720).

Almost surely, 2^255305302778 is an apocalyptic number.

255305302778 is a deficient number, since it is larger than the sum of its proper divisors (128726004742).

255305302778 is a wasteful number, since it uses less digits than its factorization.

255305302778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98533.

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 255305302778 in words is "two hundred fifty-five billion, three hundred five million, three hundred two thousand, seven hundred seventy-eight".