1244231161550 has 24 divisors (see below), whose sum is σ = 2492290727976. Its totient is φ = 459408428640.

The previous prime is 1244231161543. The next prime is 1244231161553. The reversal of 1244231161550 is 551611324421.

It is a happy number.

It is a super-2 number, since 2×1244231161550² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1244231161550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244231161553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957100244 + ... + 957101543.

It is an arithmetic number, because the mean of its divisors is an integer number (103845446999).

Almost surely, 2^{1244231161550} is an apocalyptic number.

1244231161550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244231161550 is an abundant number, since it is smaller than the sum of its proper divisors (1248059566426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1244231161550 is a wasteful number, since it uses less digits than its factorization.

1244231161550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914201812 (or 1914201807 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 1244231161550 its reverse (551611324421), we get a palindrome (1795842485971).

The spelling of 1244231161550 in words is "one trillion, two hundred forty-four billion, two hundred thirty-one million, one hundred sixty-one thousand, five hundred fifty".