1321433452006 has 4 divisors (see below), whose sum is σ = 1982150178012. Its totient is φ = 660716726002.

The previous prime is 1321433451991. The next prime is 1321433452057. The reversal of 1321433452006 is 6002543341231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330358363000 + ... + 330358363003.

It is an arithmetic number, because the mean of its divisors is an integer number (495537544503).

Almost surely, 2^{1321433452006} is an apocalyptic number.

1321433452006 is a deficient number, since it is larger than the sum of its proper divisors (660716726006).

1321433452006 is an equidigital number, since it uses as much as digits as its factorization.

1321433452006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660716726005.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 1321433452006 its reverse (6002543341231), we get a palindrome (7323976793237).

The spelling of 1321433452006 in words is "one trillion, three hundred twenty-one billion, four hundred thirty-three million, four hundred fifty-two thousand, six".