1244880266213 has 8 divisors (see below), whose sum is σ = 1249123158360. Its totient is φ = 1240644052480.

The previous prime is 1244880266207. The next prime is 1244880266297. The reversal of 1244880266213 is 3126620884421.

It can be written as a sum of positive squares in 4 ways, for example, as 579353889409 + 665526376804 = 761153^2 + 815798^2 .

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 1244880266213 - 2⁸ = 1244880265957 is a prime.

It is a super-2 number, since 2×1244880266213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244880266713) 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, 1296020 + ... + 2041917.

It is an arithmetic number, because the mean of its divisors is an integer number (156140394795).

Almost surely, 2^{1244880266213} is an apocalyptic number.

It is an amenable number.

1244880266213 is a deficient number, since it is larger than the sum of its proper divisors (4242892147).

1244880266213 is an equidigital number, since it uses as much as digits as its factorization.

1244880266213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339207.

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 1244880266213 in words is "one trillion, two hundred forty-four billion, eight hundred eighty million, two hundred sixty-six thousand, two hundred thirteen".