1213454511424 has 14 divisors (see below), whose sum is σ = 2407948796234. Its totient is φ = 606727255680.

The previous prime is 1213454511413. The next prime is 1213454511481. The reversal of 1213454511424 is 4241154543121.

It can be written as a sum of positive squares in only one way, i.e., 1095371560000 + 118082951424 = 1046600^2 + 343632^2 .

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 as a sum of consecutive naturals, namely, 9480113307 + ... + 9480113434.

Almost surely, 2^{1213454511424} is an apocalyptic number.

It is an amenable number.

1213454511424 is a deficient number, since it is larger than the sum of its proper divisors (1194494284810).

1213454511424 is an equidigital number, since it uses as much as digits as its factorization.

1213454511424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18960226753 (or 18960226743 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The spelling of 1213454511424 in words is "one trillion, two hundred thirteen billion, four hundred fifty-four million, five hundred eleven thousand, four hundred twenty-four".