20759279812 has 12 divisors (see below), whose sum is σ = 36330476560. Its totient is φ = 10379143656.

The previous prime is 20759279789. The next prime is 20759279813. The reversal of 20759279812 is 21897295702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20759279812.

It is not an unprimeable number, because it can be changed into a prime (20759279813) 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, 20298 + ... + 204769.

Almost surely, 2^20759279812 is an apocalyptic number.

It is an amenable number.

20759279812 is a deficient number, since it is larger than the sum of its proper divisors (15571196748).

20759279812 is a wasteful number, since it uses less digits than its factorization.

20759279812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248130 (or 248128 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 20759279812 in words is "twenty billion, seven hundred fifty-nine million, two hundred seventy-nine thousand, eight hundred twelve".