2669642281216 has 81 divisors (see below), whose sum is σ = 5661699871989. Its totient is φ = 1256093110272.

The previous prime is 2669642281157. The next prime is 2669642281231. The reversal of 2669642281216 is 6121822469662.

The square root of 2669642281216 is 1633904.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2078441222400 + 591201058816 = 1441680^2 + 768896^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 444418885 + ... + 444424891.

Almost surely, 2^{2669642281216} is an apocalyptic number.

2669642281216 is the 1633904-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2669642281216

2669642281216 is an abundant number, since it is smaller than the sum of its proper divisors (2992057590773).

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

2669642281216 is an frugal number, since it uses more digits than its factorization.

2669642281216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12064 (or 6026 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The spelling of 2669642281216 in words is "two trillion, six hundred sixty-nine billion, six hundred forty-two million, two hundred eighty-one thousand, two hundred sixteen".