13124420533450 has 24 divisors (see below), whose sum is σ = 24745825242828. Its totient is φ = 5177853578880.

The previous prime is 13124420533387. The next prime is 13124420533453. The reversal of 13124420533450 is 5433502442131.

It can be written as a sum of positive squares in 6 ways, for example, as 1758628733689 + 11365791799761 = 1326133^2 + 3371319^2 .

It is not an unprimeable number, because it can be changed into a prime (13124420533453) 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, 1797862177 + ... + 1797869476.

Almost surely, 2^{13124420533450} is an apocalyptic number.

13124420533450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13124420533450 is a deficient number, since it is larger than the sum of its proper divisors (11621404709378).

13124420533450 is a wasteful number, since it uses less digits than its factorization.

13124420533450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595731738 (or 3595731733 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 13124420533450 its reverse (5433502442131), we get a palindrome (18557922975581).

The spelling of 13124420533450 in words is "thirteen trillion, one hundred twenty-four billion, four hundred twenty million, five hundred thirty-three thousand, four hundred fifty".