2783668675489 has 9 divisors (see below), whose sum is σ = 3014291934009. Its totient is φ = 2569520294640.

The previous prime is 2783668675429. The next prime is 2783668675547. The reversal of 2783668675489 is 9845768663872.

The square root of 2783668675489 is 1668433.

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

It can be written as a sum of positive squares in 4 ways, for example, as 20786430625 + 2762882244864 = 144175^2 + 1662192^2 .

It is not a de Polignac number, because 2783668675489 - 2¹⁵ = 2783668642721 is a prime.

It is a super-2 number, since 2×2783668675489² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2783668675429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21625459 + ... + 21753799.

It is an arithmetic number, because the mean of its divisors is an integer number (334921326001).

Almost surely, 2^{2783668675489} is an apocalyptic number.

2783668675489 is the 1668433-rd square number.

2783668675489 is the 834217-th centered octagonal number.

It is an amenable number.

2783668675489 is a deficient number, since it is larger than the sum of its proper divisors (230623258520).

2783668675489 is an frugal number, since it uses more digits than its factorization.

2783668675489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256708 (or 128354 counting only the distinct ones).

The product of its digits is 5852528640, while the sum is 79.

The spelling of 2783668675489 in words is "two trillion, seven hundred eighty-three billion, six hundred sixty-eight million, six hundred seventy-five thousand, four hundred eighty-nine".