1399621668324 has 96 divisors (see below), whose sum is σ = 3825372966912. Its totient is φ = 393556800000.

The previous prime is 1399621668317. The next prime is 1399621668377. The reversal of 1399621668324 is 4238661269931.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4233052 + ... + 4551699.

It is an arithmetic number, because the mean of its divisors is an integer number (39847635072).

Almost surely, 2^{1399621668324} is an apocalyptic number.

It is an amenable number.

1399621668324 is an abundant number, since it is smaller than the sum of its proper divisors (2425751298588).

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

1399621668324 is a wasteful number, since it uses less digits than its factorization.

1399621668324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784857 (or 8784855 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 60.

The spelling of 1399621668324 in words is "one trillion, three hundred ninety-nine billion, six hundred twenty-one million, six hundred sixty-eight thousand, three hundred twenty-four".