8221067256369 has 8 divisors (see below), whose sum is σ = 11957916009312. Its totient is φ = 4982465003840.

The previous prime is 8221067256343. The next prime is 8221067256433. The reversal of 8221067256369 is 9636527601228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8221067256369 - 2²¹ = 8221065159217 is a prime.

It is a super-2 number, since 2×8221067256369² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8221067256169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124561625064 + ... + 124561625129.

It is an arithmetic number, because the mean of its divisors is an integer number (1494739501164).

Almost surely, 2^{8221067256369} is an apocalyptic number.

It is an amenable number.

8221067256369 is a deficient number, since it is larger than the sum of its proper divisors (3736848752943).

8221067256369 is a wasteful number, since it uses less digits than its factorization.

8221067256369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249123250207.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 8221067256369 in words is "eight trillion, two hundred twenty-one billion, sixty-seven million, two hundred fifty-six thousand, three hundred sixty-nine".