54642218291 has 4 divisors (see below), whose sum is σ = 54643324632. Its totient is φ = 54641111952.

The previous prime is 54642218273. The next prime is 54642218311. The reversal of 54642218291 is 19281224645.

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 54642218291 - 2¹⁸ = 54641956147 is a prime.

It is a super-2 number, since 2×54642218291² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54642218591) 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, 475445 + ... + 579078.

It is an arithmetic number, because the mean of its divisors is an integer number (13660831158).

Almost surely, 2^54642218291 is an apocalyptic number.

54642218291 is a deficient number, since it is larger than the sum of its proper divisors (1106341).

54642218291 is a wasteful number, since it uses less digits than its factorization.

54642218291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106340.

The product of its digits is 276480, while the sum is 44.

The spelling of 54642218291 in words is "fifty-four billion, six hundred forty-two million, two hundred eighteen thousand, two hundred ninety-one".