218148586256853 has 12 divisors (see below), whose sum is σ = 360118301122528. Its totient is φ = 124656335003880.

The previous prime is 218148586256837. The next prime is 218148586256863. The reversal of 218148586256853 is 358652685841812.

218148586256853 is a `hidden beast` number, since 2 + 1 + 8 + 1 + 4 + 8 + 5 + 8 + 6 + 2 + 568 + 53 = 666.

It is not a de Polignac number, because 218148586256853 - 2⁴ = 218148586256837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218148586256863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1731337986103 + ... + 1731337986228.

Almost surely, 2^{218148586256853} is an apocalyptic number.

It is an amenable number.

218148586256853 is a deficient number, since it is larger than the sum of its proper divisors (141969714865675).

218148586256853 is a wasteful number, since it uses less digits than its factorization.

218148586256853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462675972344 (or 3462675972341 counting only the distinct ones).

The product of its digits is 884736000, while the sum is 72.

The spelling of 218148586256853 in words is "two hundred eighteen trillion, one hundred forty-eight billion, five hundred eighty-six million, two hundred fifty-six thousand, eight hundred fifty-three".