20706507053 has 2 divisors, whose sum is σ = 20706507054. Its totient is φ = 20706507052.

The previous prime is 20706506987. The next prime is 20706507067. The reversal of 20706507053 is 35070560702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15201163849 + 5505343204 = 123293^2 + 74198^2 .

It is a cyclic number.

It is not a de Polignac number, because 20706507053 - 2²² = 20702312749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20706507083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10353253526 + 10353253527.

It is an arithmetic number, because the mean of its divisors is an integer number (10353253527).

Almost surely, 2^20706507053 is an apocalyptic number.

It is an amenable number.

20706507053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20706507053 is an equidigital number, since it uses as much as digits as its factorization.

20706507053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 35.

The spelling of 20706507053 in words is "twenty billion, seven hundred six million, five hundred seven thousand, fifty-three".