1244552445511 has 24 divisors (see below), whose sum is σ = 1363540493952. Its totient is φ = 1130839180800.

The previous prime is 1244552445481. The next prime is 1244552445593. The reversal of 1244552445511 is 1155442554421.

It is not a de Polignac number, because 1244552445511 - 2¹³ = 1244552437319 is a prime.

It is a super-3 number, since 3×1244552445511³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244552448511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97889691 + ... + 97902403.

It is an arithmetic number, because the mean of its divisors is an integer number (56814187248).

Almost surely, 2^{1244552445511} is an apocalyptic number.

1244552445511 is a deficient number, since it is larger than the sum of its proper divisors (118988048441).

1244552445511 is an equidigital number, since it uses as much as digits as its factorization.

1244552445511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13623 (or 13192 counting only the distinct ones).

The product of its digits is 640000, while the sum is 43.

Adding to 1244552445511 its reverse (1155442554421), we get a palindrome (2399994999932).

The spelling of 1244552445511 in words is "one trillion, two hundred forty-four billion, five hundred fifty-two million, four hundred forty-five thousand, five hundred eleven".