54861231554399 has 2 divisors, whose sum is σ = 54861231554400. Its totient is φ = 54861231554398.

The previous prime is 54861231554383. The next prime is 54861231554449. The reversal of 54861231554399 is 99345513216845.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54861231554399 - 2⁴ = 54861231554383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54861231554099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27430615777199 + 27430615777200.

It is an arithmetic number, because the mean of its divisors is an integer number (27430615777200).

Almost surely, 2^{54861231554399} is an apocalyptic number.

54861231554399 is a deficient number, since it is larger than the sum of its proper divisors (1).

54861231554399 is an equidigital number, since it uses as much as digits as its factorization.

54861231554399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968000, while the sum is 65.

The spelling of 54861231554399 in words is "fifty-four trillion, eight hundred sixty-one billion, two hundred thirty-one million, five hundred fifty-four thousand, three hundred ninety-nine".