2213248061778 has 128 divisors (see below), whose sum is σ = 4963153305600. Its totient is φ = 653293197312.

The previous prime is 2213248061741. The next prime is 2213248061861. The reversal of 2213248061778 is 8771608423122.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2213248061778.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233042326 + ... + 233051822.

It is an arithmetic number, because the mean of its divisors is an integer number (38774635200).

Almost surely, 2^{2213248061778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2213248061778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481576652800).

2213248061778 is an abundant number, since it is smaller than the sum of its proper divisors (2749905243822).

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

2213248061778 is a wasteful number, since it uses less digits than its factorization.

2213248061778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 2213248061778 in words is "two trillion, two hundred thirteen billion, two hundred forty-eight million, sixty-one thousand, seven hundred seventy-eight".