20701594897 has 2 divisors, whose sum is σ = 20701594898. Its totient is φ = 20701594896.

The previous prime is 20701594891. The next prime is 20701594933. The reversal of 20701594897 is 79849510702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11401114176 + 9300480721 = 106776^2 + 96439^2 .

It is a cyclic number.

It is not a de Polignac number, because 20701594897 - 2⁷ = 20701594769 is a prime.

It is not a weakly prime, because it can be changed into another prime (20701594891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10350797448 + 10350797449.

It is an arithmetic number, because the mean of its divisors is an integer number (10350797449).

Almost surely, 2^20701594897 is an apocalyptic number.

It is an amenable number.

20701594897 is a deficient number, since it is larger than the sum of its proper divisors (1).

20701594897 is an equidigital number, since it uses as much as digits as its factorization.

20701594897 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 20701594897 in words is "twenty billion, seven hundred one million, five hundred ninety-four thousand, eight hundred ninety-seven".