54021657918 has 32 divisors (see below), whose sum is σ = 110749871232. Its totient is φ = 17557596000.

The previous prime is 54021657917. The next prime is 54021657929. The reversal of 54021657918 is 81975612045.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54021657917) 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, 36033 + ... + 330668.

It is an arithmetic number, because the mean of its divisors is an integer number (3460933476).

Almost surely, 2^54021657918 is an apocalyptic number.

54021657918 is an abundant number, since it is smaller than the sum of its proper divisors (56728213314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54021657918 is a wasteful number, since it uses less digits than its factorization.

54021657918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367320.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 54021657918 in words is "fifty-four billion, twenty-one million, six hundred fifty-seven thousand, nine hundred eighteen".