20322699818 has 32 divisors (see below), whose sum is σ = 31531477824. Its totient is φ = 9817621632.

The previous prime is 20322699811. The next prime is 20322699823. The reversal of 20322699818 is 81899622302.

It is not an unprimeable number, because it can be changed into a prime (20322699811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8621096 + ... + 8623452.

It is an arithmetic number, because the mean of its divisors is an integer number (985358682).

Almost surely, 2^20322699818 is an apocalyptic number.

20322699818 is a deficient number, since it is larger than the sum of its proper divisors (11208778006).

20322699818 is a wasteful number, since it uses less digits than its factorization.

20322699818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 20322699818 in words is "twenty billion, three hundred twenty-two million, six hundred ninety-nine thousand, eight hundred eighteen".