54320217729 has 4 divisors (see below), whose sum is σ = 72426956976. Its totient is φ = 36213478484.

The previous prime is 54320217709. The next prime is 54320217767. The reversal of 54320217729 is 92771202345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54320217729 - 2¹⁷ = 54320086657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54320217709) 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, 9053369619 + ... + 9053369624.

It is an arithmetic number, because the mean of its divisors is an integer number (18106739244).

Almost surely, 2^54320217729 is an apocalyptic number.

It is an amenable number.

54320217729 is a deficient number, since it is larger than the sum of its proper divisors (18106739247).

54320217729 is a wasteful number, since it uses less digits than its factorization.

54320217729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18106739246.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 54320217729 in words is "fifty-four billion, three hundred twenty million, two hundred seventeen thousand, seven hundred twenty-nine".