1214553240405 has 12 divisors (see below), whose sum is σ = 2105225616780. Its totient is φ = 647761728192.

The previous prime is 1214553240391. The next prime is 1214553240413. The reversal of 1214553240405 is 5040423554121.

1214553240405 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 5 + 5 + 3 + 240 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 681803609796 + 532749630609 = 825714^2 + 729897^2 .

It is not a de Polignac number, because 1214553240405 - 2¹⁴ = 1214553224021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1214553240405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13495035960 + ... + 13495036049.

It is an arithmetic number, because the mean of its divisors is an integer number (175435468065).

Almost surely, 2^{1214553240405} is an apocalyptic number.

1214553240405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1214553240405 is a deficient number, since it is larger than the sum of its proper divisors (890672376375).

1214553240405 is a wasteful number, since it uses less digits than its factorization.

1214553240405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26990072020 (or 26990072017 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 1214553240405 its reverse (5040423554121), we get a palindrome (6254976794526).

The spelling of 1214553240405 in words is "one trillion, two hundred fourteen billion, five hundred fifty-three million, two hundred forty thousand, four hundred five".