20836299818 has 8 divisors (see below), whose sum is σ = 31546547712. Its totient is φ = 10320783916.

The previous prime is 20836299811. The next prime is 20836299829. The reversal of 20836299818 is 81899263802.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20836299811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48682730 + ... + 48683157.

It is an arithmetic number, because the mean of its divisors is an integer number (3943318464).

Almost surely, 2^20836299818 is an apocalyptic number.

20836299818 is a deficient number, since it is larger than the sum of its proper divisors (10710247894).

20836299818 is a wasteful number, since it uses less digits than its factorization.

20836299818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97365996.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 20836299818 in words is "twenty billion, eight hundred thirty-six million, two hundred ninety-nine thousand, eight hundred eighteen".