1226242078265 has 8 divisors (see below), whose sum is σ = 1473434343240. Its totient is φ = 979697763072.

The previous prime is 1226242078213. The next prime is 1226242078279. The reversal of 1226242078265 is 5628702426221.

It can be written as a sum of positive squares in 4 ways, for example, as 410023789561 + 816218288704 = 640331^2 + 903448^2 .

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 1226242078265 - 2¹⁰ = 1226242077241 is a prime.

It is a Curzon 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, 161983280 + ... + 161990849.

It is an arithmetic number, because the mean of its divisors is an integer number (184179292905).

Almost surely, 2^{1226242078265} is an apocalyptic number.

It is an amenable number.

1226242078265 is a deficient number, since it is larger than the sum of its proper divisors (247192264975).

1226242078265 is an equidigital number, since it uses as much as digits as its factorization.

1226242078265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323974891.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 1226242078265 in words is "one trillion, two hundred twenty-six billion, two hundred forty-two million, seventy-eight thousand, two hundred sixty-five".