238218543453 has 12 divisors (see below), whose sum is σ = 349124697824. Its totient is φ = 144374874600.

The previous prime is 238218543443. The next prime is 238218543499. The reversal of 238218543453 is 354345812832.

It is not a de Polignac number, because 238218543453 - 2⁵ = 238218543421 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 (238218543413) 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 11 ways as a sum of consecutive naturals, for example, 328124353 + ... + 328125078.

Almost surely, 2^238218543453 is an apocalyptic number.

It is an amenable number.

238218543453 is a deficient number, since it is larger than the sum of its proper divisors (110906154371).

238218543453 is a wasteful number, since it uses less digits than its factorization.

238218543453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656249456 (or 656249445 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 48.

The spelling of 238218543453 in words is "two hundred thirty-eight billion, two hundred eighteen million, five hundred forty-three thousand, four hundred fifty-three".