54643587688 has 8 divisors (see below), whose sum is σ = 102456726930. Its totient is φ = 27321793840.

The previous prime is 54643587683. The next prime is 54643587701. The reversal of 54643587688 is 88678534645.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44790643044 + 9852944644 = 211638^2 + 99262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×54643587688² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54643587683) 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 as a sum of consecutive naturals, namely, 3415224223 + ... + 3415224238.

Almost surely, 2^54643587688 is an apocalyptic number.

It is an amenable number.

54643587688 is a deficient number, since it is larger than the sum of its proper divisors (47813139242).

54643587688 is a wasteful number, since it uses less digits than its factorization.

54643587688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6830448467 (or 6830448463 counting only the distinct ones).

The product of its digits is 154828800, while the sum is 64.

The spelling of 54643587688 in words is "fifty-four billion, six hundred forty-three million, five hundred eighty-seven thousand, six hundred eighty-eight".