218625340836 has 96 divisors (see below), whose sum is σ = 596721742848. Its totient is φ = 60995088000.

The previous prime is 218625340799. The next prime is 218625340849. The reversal of 218625340836 is 638043526812.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19864111 + ... + 19875113.

It is an arithmetic number, because the mean of its divisors is an integer number (6215851488).

Almost surely, 2^218625340836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218625340836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298360871424).

218625340836 is an abundant number, since it is smaller than the sum of its proper divisors (378096402012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218625340836 is a wasteful number, since it uses less digits than its factorization.

218625340836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16561 (or 16559 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 218625340836 in words is "two hundred eighteen billion, six hundred twenty-five million, three hundred forty thousand, eight hundred thirty-six".