2183797878444 has 288 divisors, whose sum is σ = 7211350823040. Its totient is φ = 540736487424.

The previous prime is 2183797878403. The next prime is 2183797878467. The reversal of 2183797878444 is 4448787973812.

2183797878444 is a `hidden beast` number, since 2 + 18 + 3 + 7 + 97 + 87 + 8 + 444 = 666.

It is a super-2 number, since 2×2183797878444² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22730092 + ... + 22825964.

It is an arithmetic number, because the mean of its divisors is an integer number (25039412580).

Almost surely, 2^{2183797878444} 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 2183797878444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3605675411520).

2183797878444 is an abundant number, since it is smaller than the sum of its proper divisors (5027552944596).

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

2183797878444 is a wasteful number, since it uses less digits than its factorization.

2183797878444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96329 (or 96324 counting only the distinct ones).

The product of its digits is 606928896, while the sum is 72.

The spelling of 2183797878444 in words is "two trillion, one hundred eighty-three billion, seven hundred ninety-seven million, eight hundred seventy-eight thousand, four hundred forty-four".