54671217821 has 8 divisors (see below), whose sum is σ = 59818309824. Its totient is φ = 49553622720.

The previous prime is 54671217751. The next prime is 54671217829. The reversal of 54671217821 is 12871217645.

54671217821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54671217821 - 2³⁴ = 37491348637 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 (54671217829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7370345 + ... + 7377758.

It is an arithmetic number, because the mean of its divisors is an integer number (7477288728).

Almost surely, 2^54671217821 is an apocalyptic number.

It is an amenable number.

54671217821 is a deficient number, since it is larger than the sum of its proper divisors (5147092003).

54671217821 is a wasteful number, since it uses less digits than its factorization.

54671217821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14748451.

The product of its digits is 188160, while the sum is 44.

The spelling of 54671217821 in words is "fifty-four billion, six hundred seventy-one million, two hundred seventeen thousand, eight hundred twenty-one".