2779409128336 has 45 divisors (see below), whose sum is σ = 5720742999219. Its totient is φ = 1307903887872.

The previous prime is 2779409128303. The next prime is 2779409128409. The reversal of 2779409128336 is 6338219049772.

The square root of 2779409128336 is 1667156.

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 120033936 + 2779289094400 = 10956^2 + 1667120^2 .

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, 113354350 + ... + 113378866.

Almost surely, 2^{2779409128336} is an apocalyptic number.

2779409128336 is the 1667156-th square number.

It is an amenable number.

2779409128336 is an abundant number, since it is smaller than the sum of its proper divisors (2941333870883).

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

2779409128336 is an frugal number, since it uses more digits than its factorization.

2779409128336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49076 (or 24536 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 61.

The spelling of 2779409128336 in words is "two trillion, seven hundred seventy-nine billion, four hundred nine million, one hundred twenty-eight thousand, three hundred thirty-six".