54189416638 has 48 divisors (see below), whose sum is σ = 97740601344. Its totient is φ = 22443689520.

The previous prime is 54189416629. The next prime is 54189416663. The reversal of 54189416638 is 83661498145.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2245231 + ... + 2269237.

It is an arithmetic number, because the mean of its divisors is an integer number (2036262528).

Almost surely, 2^54189416638 is an apocalyptic number.

54189416638 is a deficient number, since it is larger than the sum of its proper divisors (43551184706).

54189416638 is a wasteful number, since it uses less digits than its factorization.

54189416638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24797 (or 24790 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The spelling of 54189416638 in words is "fifty-four billion, one hundred eighty-nine million, four hundred sixteen thousand, six hundred thirty-eight".