54309681287 has 4 divisors (see below), whose sum is σ = 54403806096. Its totient is φ = 54215556480.

The previous prime is 54309681259. The next prime is 54309681289. The reversal of 54309681287 is 78218690345.

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

It is a cyclic number.

It is not a de Polignac number, because 54309681287 - 2¹⁰ = 54309680263 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 (54309681289) 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 3 ways as a sum of consecutive naturals, for example, 47061539 + ... + 47062692.

It is an arithmetic number, because the mean of its divisors is an integer number (13600951524).

It is a 2-persistent number, because it is pandigital, and so is 2⋅54309681287 = 108619362574, but 3⋅54309681287 = 162929043861 is not.

Almost surely, 2^54309681287 is an apocalyptic number.

54309681287 is a deficient number, since it is larger than the sum of its proper divisors (94124809).

54309681287 is an equidigital number, since it uses as much as digits as its factorization.

54309681287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94124808.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 54309681287 in words is "fifty-four billion, three hundred nine million, six hundred eighty-one thousand, two hundred eighty-seven".