20652071705 has 8 divisors (see below), whose sum is σ = 24819313992. Its totient is φ = 16497105408.

The previous prime is 20652071689. The next prime is 20652071719. The reversal of 20652071705 is 50717025602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6092270809 + 14559800896 = 78053^2 + 120664^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20652071705 - 2⁴ = 20652071689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3065294 + ... + 3072023.

It is an arithmetic number, because the mean of its divisors is an integer number (3102414249).

Almost surely, 2^20652071705 is an apocalyptic number.

It is an amenable number.

20652071705 is a deficient number, since it is larger than the sum of its proper divisors (4167242287).

20652071705 is an equidigital number, since it uses as much as digits as its factorization.

20652071705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137995.

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 20652071705 in words is "twenty billion, six hundred fifty-two million, seventy-one thousand, seven hundred five".