1213454230645 has 16 divisors (see below), whose sum is σ = 1458263808000. Its totient is φ = 969351694848.

The previous prime is 1213454230631. The next prime is 1213454230663. The reversal of 1213454230645 is 5460324543121.

It is a cyclic number.

It is not a de Polignac number, because 1213454230645 - 2⁷ = 1213454230517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213454230598 and 1213454230607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12581716 + ... + 12677794.

It is an arithmetic number, because the mean of its divisors is an integer number (91141488000).

Almost surely, 2^{1213454230645} is an apocalyptic number.

It is an amenable number.

1213454230645 is a deficient number, since it is larger than the sum of its proper divisors (244809577355).

1213454230645 is an equidigital number, since it uses as much as digits as its factorization.

1213454230645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99732.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 1213454230645 its reverse (5460324543121), we get a palindrome (6673778773766).

The spelling of 1213454230645 in words is "one trillion, two hundred thirteen billion, four hundred fifty-four million, two hundred thirty thousand, six hundred forty-five".