2154044140416 has 640 divisors, whose sum is σ = 7903723988160. Its totient is φ = 568292474880.

The previous prime is 2154044140361. The next prime is 2154044140447. The reversal of 2154044140416 is 6140414404512.

2154044140416 is a `hidden beast` number, since 21 + 5 + 40 + 44 + 140 + 416 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 65374506 + ... + 65407446.

Almost surely, 2^{2154044140416} 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 2154044140416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3951861994080).

2154044140416 is an abundant number, since it is smaller than the sum of its proper divisors (5749679847744).

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

2154044140416 is a wasteful number, since it uses less digits than its factorization.

2154044140416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33044 (or 33023 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

Adding to 2154044140416 its reverse (6140414404512), we get a palindrome (8294458544928).

The spelling of 2154044140416 in words is "two trillion, one hundred fifty-four billion, forty-four million, one hundred forty thousand, four hundred sixteen".