54399671729 has 16 divisors (see below), whose sum is σ = 59198065920. Its totient is φ = 49690018560.

The previous prime is 54399671719. The next prime is 54399671749. The reversal of 54399671729 is 92717699345.

It is not a de Polignac number, because 54399671729 - 2¹⁶ = 54399606193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54399671719) 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 15 ways as a sum of consecutive naturals, for example, 1245737 + ... + 1288665.

It is an arithmetic number, because the mean of its divisors is an integer number (3699879120).

Almost surely, 2^54399671729 is an apocalyptic number.

It is an amenable number.

54399671729 is a deficient number, since it is larger than the sum of its proper divisors (4798394191).

54399671729 is a wasteful number, since it uses less digits than its factorization.

54399671729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43960.

The product of its digits is 25719120, while the sum is 62.

The spelling of 54399671729 in words is "fifty-four billion, three hundred ninety-nine million, six hundred seventy-one thousand, seven hundred twenty-nine".