218706736834 has 16 divisors (see below), whose sum is σ = 360340620480. Its totient is φ = 99093669840.

The previous prime is 218706736823. The next prime is 218706736841. The reversal of 218706736834 is 438637607812.

218706736834 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125117397 + ... + 125119144.

It is an arithmetic number, because the mean of its divisors is an integer number (22521288780).

Almost surely, 2^218706736834 is an apocalyptic number.

218706736834 is a deficient number, since it is larger than the sum of its proper divisors (141633883646).

218706736834 is a wasteful number, since it uses less digits than its factorization.

218706736834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250236585.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The spelling of 218706736834 in words is "two hundred eighteen billion, seven hundred six million, seven hundred thirty-six thousand, eight hundred thirty-four".