20840675701 has 2 divisors, whose sum is σ = 20840675702. Its totient is φ = 20840675700.

The previous prime is 20840675699. The next prime is 20840675707. The reversal of 20840675701 is 10757604802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18009371601 + 2831304100 = 134199^2 + 53210^2 .

It is a cyclic number.

It is not a de Polignac number, because 20840675701 - 2¹ = 20840675699 is a prime.

Together with 20840675699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20840675707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10420337850 + 10420337851.

It is an arithmetic number, because the mean of its divisors is an integer number (10420337851).

Almost surely, 2^20840675701 is an apocalyptic number.

It is an amenable number.

20840675701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20840675701 is an equidigital number, since it uses as much as digits as its factorization.

20840675701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 20840675701 in words is "twenty billion, eight hundred forty million, six hundred seventy-five thousand, seven hundred one".