2054081778719 has 8 divisors (see below), whose sum is σ = 2165837549040. Its totient is φ = 1942690628736.

The previous prime is 2054081778689. The next prime is 2054081778731. The reversal of 2054081778719 is 9178771804502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2054081778719 is a prime.

It is a super-2 number, since 2×2054081778719² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054081778769) by changing a digit.

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, 91143512 + ... + 91166045.

It is an arithmetic number, because the mean of its divisors is an integer number (270729693630).

Almost surely, 2^{2054081778719} is an apocalyptic number.

2054081778719 is a deficient number, since it is larger than the sum of its proper divisors (111755770321).

2054081778719 is a wasteful number, since it uses less digits than its factorization.

2054081778719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182310169.

The product of its (nonzero) digits is 7902720, while the sum is 59.

The spelling of 2054081778719 in words is "two trillion, fifty-four billion, eighty-one million, seven hundred seventy-eight thousand, seven hundred nineteen".