2780725279189 has 16 divisors (see below), whose sum is σ = 3267233270784. Its totient is φ = 2333213467200.

The previous prime is 2780725279187. The next prime is 2780725279201. The reversal of 2780725279189 is 9819725270872.

It is not a de Polignac number, because 2780725279189 - 2¹ = 2780725279187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780725279187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189004 + ... + 2365834.

It is an arithmetic number, because the mean of its divisors is an integer number (204202079424).

Almost surely, 2^{2780725279189} is an apocalyptic number.

It is an amenable number.

2780725279189 is a deficient number, since it is larger than the sum of its proper divisors (486507991595).

2780725279189 is a wasteful number, since it uses less digits than its factorization.

2780725279189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185788.

The product of its (nonzero) digits is 71124480, while the sum is 67.

The spelling of 2780725279189 in words is "two trillion, seven hundred eighty billion, seven hundred twenty-five million, two hundred seventy-nine thousand, one hundred eighty-nine".