20613422218 has 8 divisors (see below), whose sum is σ = 30920778720. Its totient is φ = 10306495980.

The previous prime is 20613422209. The next prime is 20613422251. The reversal of 20613422218 is 81222431602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20613422218.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72483 + ... + 215593.

It is an arithmetic number, because the mean of its divisors is an integer number (3865097340).

Almost surely, 2^20613422218 is an apocalyptic number.

20613422218 is a deficient number, since it is larger than the sum of its proper divisors (10307356502).

20613422218 is a wasteful number, since it uses less digits than its factorization.

20613422218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215132.

The product of its (nonzero) digits is 9216, while the sum is 31.

The spelling of 20613422218 in words is "twenty billion, six hundred thirteen million, four hundred twenty-two thousand, two hundred eighteen".