54021988499 has 4 divisors (see below), whose sum is σ = 54022869600. Its totient is φ = 54021107400.

The previous prime is 54021988477. The next prime is 54021988513. The reversal of 54021988499 is 99488912045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54021988499 - 2²⁰ = 54020939923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54021988409) 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 in 3 ways as a sum of consecutive naturals, for example, 341099 + ... + 473700.

It is an arithmetic number, because the mean of its divisors is an integer number (13505717400).

Almost surely, 2^54021988499 is an apocalyptic number.

54021988499 is a deficient number, since it is larger than the sum of its proper divisors (881101).

54021988499 is an equidigital number, since it uses as much as digits as its factorization.

54021988499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881100.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 54021988499 in words is "fifty-four billion, twenty-one million, nine hundred eighty-eight thousand, four hundred ninety-nine".