54720720399 has 32 divisors (see below), whose sum is σ = 77196427264. Its totient is φ = 34424339040.

The previous prime is 54720720391. The next prime is 54720720403. The reversal of 54720720399 is 99302702745.

It is not a de Polignac number, because 54720720399 - 2³ = 54720720391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54720720391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2416122 + ... + 2438664.

It is an arithmetic number, because the mean of its divisors is an integer number (2412388352).

Almost surely, 2^54720720399 is an apocalyptic number.

54720720399 is a deficient number, since it is larger than the sum of its proper divisors (22475706865).

54720720399 is a wasteful number, since it uses less digits than its factorization.

54720720399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23227.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 54720720399 in words is "fifty-four billion, seven hundred twenty million, seven hundred twenty thousand, three hundred ninety-nine".