2921688943416 has 128 divisors (see below), whose sum is σ = 8328938342400. Its totient is φ = 948630061440.

The previous prime is 2921688943309. The next prime is 2921688943447. The reversal of 2921688943416 is 6143498861292.

2921688943416 is a `hidden beast` number, since 2 + 92 + 16 + 8 + 89 + 43 + 416 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 280705 + ... + 2433551.

It is an arithmetic number, because the mean of its divisors is an integer number (65069830800).

Almost surely, 2^{2921688943416} 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 2921688943416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4164469171200).

2921688943416 is an abundant number, since it is smaller than the sum of its proper divisors (5407249398984).

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

2921688943416 is a wasteful number, since it uses less digits than its factorization.

2921688943416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153026 (or 2153016 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 2921688943416 in words is "two trillion, nine hundred twenty-one billion, six hundred eighty-eight million, nine hundred forty-three thousand, four hundred sixteen".