54387219391 has 2 divisors, whose sum is σ = 54387219392. Its totient is φ = 54387219390.

The previous prime is 54387219347. The next prime is 54387219463. The reversal of 54387219391 is 19391278345.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54387219391 - 2²⁹ = 53850348479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54387219311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27193609695 + 27193609696.

It is an arithmetic number, because the mean of its divisors is an integer number (27193609696).

Almost surely, 2^54387219391 is an apocalyptic number.

54387219391 is a deficient number, since it is larger than the sum of its proper divisors (1).

54387219391 is an equidigital number, since it uses as much as digits as its factorization.

54387219391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The spelling of 54387219391 in words is "fifty-four billion, three hundred eighty-seven million, two hundred nineteen thousand, three hundred ninety-one".