255170928647 has 2 divisors, whose sum is σ = 255170928648. Its totient is φ = 255170928646.

The previous prime is 255170928547. The next prime is 255170928709. The reversal of 255170928647 is 746829071552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255170928647 - 2¹⁴ = 255170912263 is a prime.

It is a super-2 number, since 2×255170928647² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255170928592 and 255170928601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255170928547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127585464323 + 127585464324.

It is an arithmetic number, because the mean of its divisors is an integer number (127585464324).

Almost surely, 2^255170928647 is an apocalyptic number.

255170928647 is a deficient number, since it is larger than the sum of its proper divisors (1).

255170928647 is an equidigital number, since it uses as much as digits as its factorization.

255170928647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 255170928647 in words is "two hundred fifty-five billion, one hundred seventy million, nine hundred twenty-eight thousand, six hundred forty-seven".