1321650430064 has 20 divisors (see below), whose sum is σ = 2563266142104. Its totient is φ = 660162393408.

The previous prime is 1321650430057. The next prime is 1321650430097. The reversal of 1321650430064 is 4600340561231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41409902 + ... + 41441805.

Almost surely, 2^{1321650430064} is an apocalyptic number.

It is an amenable number.

1321650430064 is a deficient number, since it is larger than the sum of its proper divisors (1241615712040).

1321650430064 is an equidigital number, since it uses as much as digits as its factorization.

1321650430064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82852712 (or 82852706 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 1321650430064 its reverse (4600340561231), we get a palindrome (5921990991295).

The spelling of 1321650430064 in words is "one trillion, three hundred twenty-one billion, six hundred fifty million, four hundred thirty thousand, sixty-four".