218614467406 has 4 divisors (see below), whose sum is σ = 327921701112. Its totient is φ = 109307233702.

The previous prime is 218614467359. The next prime is 218614467427. The reversal of 218614467406 is 604764416812.

218614467406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 218614467406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54653616850 + ... + 54653616853.

It is an arithmetic number, because the mean of its divisors is an integer number (81980425278).

Almost surely, 2^218614467406 is an apocalyptic number.

218614467406 is a deficient number, since it is larger than the sum of its proper divisors (109307233706).

218614467406 is a wasteful number, since it uses less digits than its factorization.

218614467406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109307233705.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 218614467406 in words is "two hundred eighteen billion, six hundred fourteen million, four hundred sixty-seven thousand, four hundred six".