2705978405706 has 16 divisors (see below), whose sum is σ = 5413593366624. Its totient is φ = 901720042704.

The previous prime is 2705978405687. The next prime is 2705978405731. The reversal of 2705978405706 is 6075048795072.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2705978405706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68168305 + ... + 68207988.

It is an arithmetic number, because the mean of its divisors is an integer number (338349585414).

Almost surely, 2^{2705978405706} is an apocalyptic number.

2705978405706 is an abundant number, since it is smaller than the sum of its proper divisors (2707614960918).

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

2705978405706 is a wasteful number, since it uses less digits than its factorization.

2705978405706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136379605.

The product of its (nonzero) digits is 29635200, while the sum is 60.

The spelling of 2705978405706 in words is "two trillion, seven hundred five billion, nine hundred seventy-eight million, four hundred five thousand, seven hundred six".