20705360776 has 8 divisors (see below), whose sum is σ = 38822551470. Its totient is φ = 10352680384.

The previous prime is 20705360773. The next prime is 20705360779. The reversal of 20705360776 is 67706350702.

It is an interprime number because it is at equal distance from previous prime (20705360773) and next prime (20705360779).

It can be written as a sum of positive squares in only one way, i.e., 18531376900 + 2173983876 = 136130^2 + 46626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20705360773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1294085041 + ... + 1294085056.

Almost surely, 2^20705360776 is an apocalyptic number.

It is an amenable number.

20705360776 is a deficient number, since it is larger than the sum of its proper divisors (18117190694).

20705360776 is a wasteful number, since it uses less digits than its factorization.

20705360776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588170103 (or 2588170099 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 43.

The spelling of 20705360776 in words is "twenty billion, seven hundred five million, three hundred sixty thousand, seven hundred seventy-six".