1321404646614 has 48 divisors (see below), whose sum is σ = 2864434712832. Its totient is φ = 406203224544.

The previous prime is 1321404646591. The next prime is 1321404646651. The reversal of 1321404646614 is 4166464041231.

It is a happy number.

It is a super-2 number, since 2×1321404646614² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464919 + ... + 1690845.

It is an arithmetic number, because the mean of its divisors is an integer number (59675723184).

Almost surely, 2^{1321404646614} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321404646614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432217356416).

1321404646614 is an abundant number, since it is smaller than the sum of its proper divisors (1543030066218).

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

1321404646614 is a wasteful number, since it uses less digits than its factorization.

1321404646614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227021 (or 1227008 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

Adding to 1321404646614 its reverse (4166464041231), we get a palindrome (5487868687845).

The spelling of 1321404646614 in words is "one trillion, three hundred twenty-one billion, four hundred four million, six hundred forty-six thousand, six hundred fourteen".