1228271786355 has 16 divisors (see below), whose sum is σ = 1997451824544. Its totient is φ = 644339297280.

The previous prime is 1228271786353. The next prime is 1228271786359. The reversal of 1228271786355 is 5536871728221.

It is not a de Polignac number, because 1228271786355 - 2¹ = 1228271786353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1228271786295 and 1228271786304.

It is not an unprimeable number, because it can be changed into a prime (1228271786351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671185854 + ... + 671187683.

It is an arithmetic number, because the mean of its divisors is an integer number (124840739034).

Almost surely, 2^{1228271786355} is an apocalyptic number.

1228271786355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1228271786355 is a deficient number, since it is larger than the sum of its proper divisors (769180038189).

1228271786355 is a wasteful number, since it uses less digits than its factorization.

1228271786355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342373606.

The product of its digits is 11289600, while the sum is 57.

The spelling of 1228271786355 in words is "one trillion, two hundred twenty-eight billion, two hundred seventy-one million, seven hundred eighty-six thousand, three hundred fifty-five".