2783666728145 has 8 divisors (see below), whose sum is σ = 3340803018240. Its totient is φ = 2226664752880.

The previous prime is 2783666728093. The next prime is 2783666728159. The reversal of 2783666728145 is 5418276663872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2783666728145 - 2³⁶ = 2714947251409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33533105 + ... + 33616014.

It is an arithmetic number, because the mean of its divisors is an integer number (417600377280).

Almost surely, 2^{2783666728145} is an apocalyptic number.

It is an amenable number.

2783666728145 is a deficient number, since it is larger than the sum of its proper divisors (557136290095).

2783666728145 is an equidigital number, since it uses as much as digits as its factorization.

2783666728145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67157415.

The product of its digits is 162570240, while the sum is 65.

The spelling of 2783666728145 in words is "two trillion, seven hundred eighty-three billion, six hundred sixty-six million, seven hundred twenty-eight thousand, one hundred forty-five".