1620839328696 has 256 divisors, whose sum is σ = 5242783488000. Its totient is φ = 454380917760.

The previous prime is 1620839328659. The next prime is 1620839328707. The reversal of 1620839328696 is 6968239380261.

1620839328696 is a `hidden beast` number, since 16 + 208 + 3 + 9 + 328 + 6 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37701405 + ... + 37744371.

It is an arithmetic number, because the mean of its divisors is an integer number (20479623000).

Almost surely, 2^{1620839328696} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620839328696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2621391744000).

1620839328696 is an abundant number, since it is smaller than the sum of its proper divisors (3621944159304).

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

1620839328696 is a wasteful number, since it uses less digits than its factorization.

1620839328696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43459 (or 43449 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 1620839328696 in words is "one trillion, six hundred twenty billion, eight hundred thirty-nine million, three hundred twenty-eight thousand, six hundred ninety-six".