20054205337777 has 4 divisors (see below), whose sum is σ = 21596836517620. Its totient is φ = 18511574157936.

The previous prime is 20054205337769. The next prime is 20054205337783. The reversal of 20054205337777 is 77773350245002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11753761997376 + 8300443340401 = 3428376^2 + 2881049^2 .

It is a cyclic number.

It is not a de Polignac number, because 20054205337777 - 2³ = 20054205337769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20054205337787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771315589902 + ... + 771315589927.

It is an arithmetic number, because the mean of its divisors is an integer number (5399209129405).

Almost surely, 2^{20054205337777} is an apocalyptic number.

It is an amenable number.

20054205337777 is a deficient number, since it is larger than the sum of its proper divisors (1542631179843).

20054205337777 is a wasteful number, since it uses less digits than its factorization.

20054205337777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542631179842.

The product of its (nonzero) digits is 8643600, while the sum is 52.

The spelling of 20054205337777 in words is "twenty trillion, fifty-four billion, two hundred five million, three hundred thirty-seven thousand, seven hundred seventy-seven".