2055742777905 has 8 divisors (see below), whose sum is σ = 3289188444672. Its totient is φ = 1096396148208.

The previous prime is 2055742777901. The next prime is 2055742777931. The reversal of 2055742777905 is 5097772475502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2055742777905 - 2² = 2055742777901 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2055742777901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68524759249 + ... + 68524759278.

It is an arithmetic number, because the mean of its divisors is an integer number (411148555584).

Almost surely, 2^{2055742777905} is an apocalyptic number.

It is an amenable number.

2055742777905 is a deficient number, since it is larger than the sum of its proper divisors (1233445666767).

2055742777905 is a wasteful number, since it uses less digits than its factorization.

2055742777905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137049518535.

The product of its (nonzero) digits is 43218000, while the sum is 60.

The spelling of 2055742777905 in words is "two trillion, fifty-five billion, seven hundred forty-two million, seven hundred seventy-seven thousand, nine hundred five".