54806320993 has 4 divisors (see below), whose sum is σ = 54887757508. Its totient is φ = 54724884480.

The previous prime is 54806320969. The next prime is 54806321023. The reversal of 54806320993 is 39902360845.

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 5349898449 + 49456422544 = 73143^2 + 222388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54806320993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54806320903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40717248 + ... + 40718593.

It is an arithmetic number, because the mean of its divisors is an integer number (13721939377).

Almost surely, 2^54806320993 is an apocalyptic number.

It is an amenable number.

54806320993 is a deficient number, since it is larger than the sum of its proper divisors (81436515).

54806320993 is an equidigital number, since it uses as much as digits as its factorization.

54806320993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81436514.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 54806320993 in words is "fifty-four billion, eight hundred six million, three hundred twenty thousand, nine hundred ninety-three".