2780843067396 has 81 divisors (see below), whose sum is σ = 7056443469621. Its totient is φ = 923389060608.

The previous prime is 2780843067389. The next prime is 2780843067421. The reversal of 2780843067396 is 6937603480872.

The square root of 2780843067396 is 1667586.

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

2780843067396 is a `hidden beast` number, since 2 + 7 + 80 + 84 + 30 + 67 + 396 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1699409460996 + 1081433606400 = 1303614^2 + 1039920^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4492476375 + ... + 4492476993.

Almost surely, 2^{2780843067396} is an apocalyptic number.

2780843067396 is the 1667586-th square number.

It is an amenable number.

2780843067396 is an abundant number, since it is smaller than the sum of its proper divisors (4275600402225).

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

2780843067396 is an frugal number, since it uses more digits than its factorization.

2780843067396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 2780843067396 in words is "two trillion, seven hundred eighty billion, eight hundred forty-three million, sixty-seven thousand, three hundred ninety-six".