2163435421440 has 144 divisors (see below), whose sum is σ = 6910451660448. Its totient is φ = 576834306048.

The previous prime is 2163435421429. The next prime is 2163435421453. The reversal of 2163435421440 is 441245343612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29981244 + ... + 30053316.

It is an arithmetic number, because the mean of its divisors is an integer number (47989247642).

Almost surely, 2^{2163435421440} is an apocalyptic number.

2163435421440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2163435421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3455225830224).

2163435421440 is an abundant number, since it is smaller than the sum of its proper divisors (4747016239008).

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

2163435421440 is an equidigital number, since it uses as much as digits as its factorization.

2163435421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79914 (or 79900 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 2163435421440 in words is "two trillion, one hundred sixty-three billion, four hundred thirty-five million, four hundred twenty-one thousand, four hundred forty".