1144431205220 has 48 divisors (see below), whose sum is σ = 2555788742640. Its totient is φ = 428963241984.

The previous prime is 1144431205207. The next prime is 1144431205231. The reversal of 1144431205220 is 225021344411.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 381659541796 + 762771663424 = 617786^2 + 873368^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7271429 + ... + 7427148.

It is an arithmetic number, because the mean of its divisors is an integer number (53245598805).

Almost surely, 2^{1144431205220} is an apocalyptic number.

1144431205220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144431205220 is an abundant number, since it is smaller than the sum of its proper divisors (1411357537420).

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

1144431205220 is a wasteful number, since it uses less digits than its factorization.

1144431205220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14698832 (or 14698830 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1144431205220 its reverse (225021344411), we get a palindrome (1369452549631).

The spelling of 1144431205220 in words is "one trillion, one hundred forty-four billion, four hundred thirty-one million, two hundred five thousand, two hundred twenty".