54247645064 has 16 divisors (see below), whose sum is σ = 101718711900. Its totient is φ = 27122655232.

The previous prime is 54247645057. The next prime is 54247645121. The reversal of 54247645064 is 46054674245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54107412100 + 140232964 = 232610^2 + 11842^2 .

It is an unprimeable number.

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, 70472 + ... + 336840.

Almost surely, 2^54247645064 is an apocalyptic number.

It is an amenable number.

54247645064 is a deficient number, since it is larger than the sum of its proper divisors (47471066836).

54247645064 is a wasteful number, since it uses less digits than its factorization.

54247645064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291832 (or 291828 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 47.

The spelling of 54247645064 in words is "fifty-four billion, two hundred forty-seven million, six hundred forty-five thousand, sixty-four".