54821012845 has 4 divisors (see below), whose sum is σ = 65785215420. Its totient is φ = 43856810272.

The previous prime is 54821012843. The next prime is 54821012879.

54821012845 is nontrivially palindromic in base 10.

54821012845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 33910117609 + 20910895236 = 184147^2 + 144606^2 .

It is a cyclic number.

It is not a de Polignac number, because 54821012845 - 2¹ = 54821012843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54821012798 and 54821012807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54821012843) 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, 5482101280 + ... + 5482101289.

It is an arithmetic number, because the mean of its divisors is an integer number (16446303855).

Almost surely, 2^54821012845 is an apocalyptic number.

It is an amenable number.

54821012845 is a deficient number, since it is larger than the sum of its proper divisors (10964202575).

54821012845 is a wasteful number, since it uses less digits than its factorization.

54821012845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964202574.

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 54821012845 in words is "fifty-four billion, eight hundred twenty-one million, twelve thousand, eight hundred forty-five".