54779136077 has 4 divisors (see below), whose sum is σ = 54783504156. Its totient is φ = 54774768000.

The previous prime is 54779136043. The next prime is 54779136107. The reversal of 54779136077 is 77063197745.

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 20566714921 + 34212421156 = 143411^2 + 184966^2 .

It is a cyclic number.

It is not a de Polignac number, because 54779136077 - 2²⁶ = 54712027213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54779136007) 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, 2165174 + ... + 2190327.

It is an arithmetic number, because the mean of its divisors is an integer number (13695876039).

Almost surely, 2^54779136077 is an apocalyptic number.

It is an amenable number.

54779136077 is a deficient number, since it is larger than the sum of its proper divisors (4368079).

54779136077 is a wasteful number, since it uses less digits than its factorization.

54779136077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368078.

The product of its (nonzero) digits is 7779240, while the sum is 56.

The spelling of 54779136077 in words is "fifty-four billion, seven hundred seventy-nine million, one hundred thirty-six thousand, seventy-seven".