1244468644421 has 8 divisors (see below), whose sum is σ = 1270724317464. Its totient is φ = 1218461840640.

The previous prime is 1244468644403. The next prime is 1244468644439.

1244468644421 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (1244468644403) and next prime (1244468644439).

It can be written as a sum of positive squares in 4 ways, for example, as 608534167396 + 635934477025 = 780086^2 + 797455^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244468644421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244468644421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244468644021) 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, 62207210 + ... + 62227211.

It is an arithmetic number, because the mean of its divisors is an integer number (158840539683).

Almost surely, 2^{1244468644421} is an apocalyptic number.

It is an amenable number.

1244468644421 is a deficient number, since it is larger than the sum of its proper divisors (26255673043).

1244468644421 is a wasteful number, since it uses less digits than its factorization.

1244468644421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124434631.

The product of its digits is 4718592, while the sum is 50.

The spelling of 1244468644421 in words is "one trillion, two hundred forty-four billion, four hundred sixty-eight million, six hundred forty-four thousand, four hundred twenty-one".