2156896896 has 384 divisors, whose sum is σ = 7710759360. Its totient is φ = 526417920.

The previous prime is 2156896849. The next prime is 2156896919. The reversal of 2156896896 is 6986986512.

It is a tau number, because it is divible by the number of its divisors (384).

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, 3518286 + ... + 3518898.

Almost surely, 2^2156896896 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 2156896896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3855379680).

2156896896 is an abundant number, since it is smaller than the sum of its proper divisors (5553862464).

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

2156896896 is a wasteful number, since it uses less digits than its factorization.

2156896896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 653 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 60.

The square root of 2156896896 is about 46442.4040721408. The cubic root of 2156896896 is about 1292.0414955984.

The spelling of 2156896896 in words is "two billion, one hundred fifty-six million, eight hundred ninety-six thousand, eight hundred ninety-six".