2243816297856 has 480 divisors, whose sum is σ = 8176640412600. Its totient is φ = 607346159616.

The previous prime is 2243816297851. The next prime is 2243816297873. The reversal of 2243816297856 is 6587926183422.

2243816297856 is a `hidden beast` number, since 2 + 2 + 438 + 1 + 62 + 97 + 8 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 2243816297793 and 2243816297802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243816297851) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9536380 + ... + 9768836.

Almost surely, 2^{2243816297856} 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 2243816297856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4088320206300).

2243816297856 is an abundant number, since it is smaller than the sum of its proper divisors (5932824114744).

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

2243816297856 is a wasteful number, since it uses less digits than its factorization.

2243816297856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232516 (or 232488 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 2243816297856 in words is "two trillion, two hundred forty-three billion, eight hundred sixteen million, two hundred ninety-seven thousand, eight hundred fifty-six".