1213404413450 has 24 divisors (see below), whose sum is σ = 2280199560492. Its totient is φ = 480358033920.

The previous prime is 1213404413437. The next prime is 1213404413479. The reversal of 1213404413450 is 543144043121.

It can be written as a sum of positive squares in 6 ways, for example, as 727641414361 + 485762999089 = 853019^2 + 696967^2 .

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, 125088389 + ... + 125098088.

Almost surely, 2^{1213404413450} is an apocalyptic number.

1213404413450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213404413450 is a deficient number, since it is larger than the sum of its proper divisors (1066795147042).

1213404413450 is a wasteful number, since it uses less digits than its factorization.

1213404413450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250186586 (or 250186581 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1213404413450 its reverse (543144043121), we get a palindrome (1756548456571).

The spelling of 1213404413450 in words is "one trillion, two hundred thirteen billion, four hundred four million, four hundred thirteen thousand, four hundred fifty".