20769776218 has 8 divisors (see below), whose sum is σ = 31178950848. Its totient is φ = 10376792604.

The previous prime is 20769776213. The next prime is 20769776219. The reversal of 20769776218 is 81267796702.

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

It is not an unprimeable number, because it can be changed into a prime (20769776213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4044546 + ... + 4049677.

It is an arithmetic number, because the mean of its divisors is an integer number (3897368856).

Almost surely, 2^20769776218 is an apocalyptic number.

20769776218 is a deficient number, since it is larger than the sum of its proper divisors (10409174630).

20769776218 is a wasteful number, since it uses less digits than its factorization.

20769776218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8095508.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 20769776218 in words is "twenty billion, seven hundred sixty-nine million, seven hundred seventy-six thousand, two hundred eighteen".