1315224444020 has 36 divisors (see below), whose sum is σ = 2763293257452. Its totient is φ = 525838080000.

The previous prime is 1315224444007. The next prime is 1315224444041. The reversal of 1315224444020 is 204444225131.

It can be written as a sum of positive squares in 6 ways, for example, as 22014250384 + 1293210193636 = 148372^2 + 1137194^2 .

It is a super-2 number, since 2×1315224444020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273945620 + ... + 273950420.

Almost surely, 2^{1315224444020} is an apocalyptic number.

1315224444020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315224444020 is an abundant number, since it is smaller than the sum of its proper divisors (1448068813432).

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

1315224444020 is an frugal number, since it uses more digits than its factorization.

1315224444020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12212 (or 8509 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 1315224444020 its reverse (204444225131), we get a palindrome (1519668669151).

The spelling of 1315224444020 in words is "one trillion, three hundred fifteen billion, two hundred twenty-four million, four hundred forty-four thousand, twenty".