1213552413406 has 16 divisors (see below), whose sum is σ = 1827125314560. Its totient is φ = 604510837560.

The previous prime is 1213552413389. The next prime is 1213552413413. The reversal of 1213552413406 is 6043142553121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19979775 + ... + 20040421.

It is an arithmetic number, because the mean of its divisors is an integer number (114195332160).

Almost surely, 2^{1213552413406} is an apocalyptic number.

1213552413406 is a deficient number, since it is larger than the sum of its proper divisors (613572901154).

1213552413406 is a wasteful number, since it uses less digits than its factorization.

1213552413406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97839.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 1213552413406 its reverse (6043142553121), we get a palindrome (7256694966527).

The spelling of 1213552413406 in words is "one trillion, two hundred thirteen billion, five hundred fifty-two million, four hundred thirteen thousand, four hundred six".