2054779639859 has 16 divisors (see below), whose sum is σ = 2125805481984. Its totient is φ = 1984055040000.

The previous prime is 2054779639793. The next prime is 2054779639897. The reversal of 2054779639859 is 9589369774502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2054779639859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2054779639459) 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, 26105267 + ... + 26183859.

It is an arithmetic number, because the mean of its divisors is an integer number (132862842624).

Almost surely, 2^{2054779639859} is an apocalyptic number.

2054779639859 is a deficient number, since it is larger than the sum of its proper divisors (71025842125).

2054779639859 is a wasteful number, since it uses less digits than its factorization.

2054779639859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80498.

The product of its (nonzero) digits is 1028764800, while the sum is 74.

The spelling of 2054779639859 in words is "two trillion, fifty-four billion, seven hundred seventy-nine million, six hundred thirty-nine thousand, eight hundred fifty-nine".