54721336871 has 2 divisors, whose sum is σ = 54721336872. Its totient is φ = 54721336870.

The previous prime is 54721336867. The next prime is 54721336909. The reversal of 54721336871 is 17863312745.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54721336871 - 2² = 54721336867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54721396871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27360668435 + 27360668436.

It is an arithmetic number, because the mean of its divisors is an integer number (27360668436).

Almost surely, 2^54721336871 is an apocalyptic number.

54721336871 is a deficient number, since it is larger than the sum of its proper divisors (1).

54721336871 is an equidigital number, since it uses as much as digits as its factorization.

54721336871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The spelling of 54721336871 in words is "fifty-four billion, seven hundred twenty-one million, three hundred thirty-six thousand, eight hundred seventy-one".