1213452331552 has 48 divisors (see below), whose sum is σ = 2550826555200. Its totient is φ = 566850316032.

The previous prime is 1213452331549. The next prime is 1213452331561. The reversal of 1213452331552 is 2551332543121.

It is a happy 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, 19139427 + ... + 19202722.

It is an arithmetic number, because the mean of its divisors is an integer number (53142219900).

Almost surely, 2^{1213452331552} is an apocalyptic number.

It is an amenable number.

1213452331552 is an abundant number, since it is smaller than the sum of its proper divisors (1337374223648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213452331552 is a wasteful number, since it uses less digits than its factorization.

1213452331552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38342225 (or 38342217 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

Adding to 1213452331552 its reverse (2551332543121), we get a palindrome (3764784874673).

The spelling of 1213452331552 in words is "one trillion, two hundred thirteen billion, four hundred fifty-two million, three hundred thirty-one thousand, five hundred fifty-two".