218611230454 has 8 divisors (see below), whose sum is σ = 327922607088. Its totient is φ = 109303694760.

The previous prime is 218611230433. The next prime is 218611230491. The reversal of 218611230454 is 454032116812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×218611230454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 813457 + ... + 1048300.

It is an arithmetic number, because the mean of its divisors is an integer number (40990325886).

Almost surely, 2^218611230454 is an apocalyptic number.

218611230454 is a deficient number, since it is larger than the sum of its proper divisors (109311376634).

218611230454 is a wasteful number, since it uses less digits than its factorization.

218611230454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920470.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 218611230454 in words is "two hundred eighteen billion, six hundred eleven million, two hundred thirty thousand, four hundred fifty-four".