2169328656 has 240 divisors, whose sum is σ = 6611576832. Its totient is φ = 610283520.

The previous prime is 2169328627. The next prime is 2169328727. The reversal of 2169328656 is 6568239612.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12539386 + ... + 12539558.

Almost surely, 2^2169328656 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 2169328656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3305788416).

2169328656 is an abundant number, since it is smaller than the sum of its proper divisors (4442248176).

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

2169328656 is a wasteful number, since it uses less digits than its factorization.

2169328656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 333 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 2169328656 is about 46576.0523874662. The cubic root of 2169328656 is about 1294.5190655116.

The spelling of 2169328656 in words is "two billion, one hundred sixty-nine million, three hundred twenty-eight thousand, six hundred fifty-six".