2163802235440 has 80 divisors (see below), whose sum is σ = 5116735008000. Its totient is φ = 850746887936.

The previous prime is 2163802235431. The next prime is 2163802235459. The reversal of 2163802235440 is 445322083612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2163802235440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2163802235393 and 2163802235402.

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, 46813461 + ... + 46859659.

It is an arithmetic number, because the mean of its divisors is an integer number (63959187600).

Almost surely, 2^{2163802235440} is an apocalyptic number.

2163802235440 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 2163802235440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2558367504000).

2163802235440 is an abundant number, since it is smaller than the sum of its proper divisors (2952932772560).

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

2163802235440 is a wasteful number, since it uses less digits than its factorization.

2163802235440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56194 (or 56188 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 2163802235440 in words is "two trillion, one hundred sixty-three billion, eight hundred two million, two hundred thirty-five thousand, four hundred forty".