54185415959823 has 4 divisors (see below), whose sum is σ = 72247221279768. Its totient is φ = 36123610639880.

The previous prime is 54185415959809. The next prime is 54185415959849. The reversal of 54185415959823 is 32895951458145.

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 54185415959823 - 2⁵ = 54185415959791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54185415959023) 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, 9030902659968 + ... + 9030902659973.

It is an arithmetic number, because the mean of its divisors is an integer number (18061805319942).

Almost surely, 2^{54185415959823} is an apocalyptic number.

54185415959823 is a deficient number, since it is larger than the sum of its proper divisors (18061805319945).

54185415959823 is a wasteful number, since it uses less digits than its factorization.

54185415959823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18061805319944.

The product of its digits is 311040000, while the sum is 69.

The spelling of 54185415959823 in words is "fifty-four trillion, one hundred eighty-five billion, four hundred fifteen million, nine hundred fifty-nine thousand, eight hundred twenty-three".