218388231463 has 8 divisors (see below), whose sum is σ = 221781587328. Its totient is φ = 215019919224.

The previous prime is 218388231437. The next prime is 218388231511. The reversal of 218388231463 is 364132883812.

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 218388231463 - 2¹⁷ = 218388100391 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 (218388231433) 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 in 7 ways as a sum of consecutive naturals, for example, 6243331 + ... + 6278212.

It is an arithmetic number, because the mean of its divisors is an integer number (27722698416).

Almost surely, 2^218388231463 is an apocalyptic number.

218388231463 is a deficient number, since it is larger than the sum of its proper divisors (3393355865).

218388231463 is a wasteful number, since it uses less digits than its factorization.

218388231463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521813.

The product of its digits is 1327104, while the sum is 49.

The spelling of 218388231463 in words is "two hundred eighteen billion, three hundred eighty-eight million, two hundred thirty-one thousand, four hundred sixty-three".