20732522777 has 2 divisors, whose sum is σ = 20732522778. Its totient is φ = 20732522776.

The previous prime is 20732522749. The next prime is 20732522801. The reversal of 20732522777 is 77722523702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20386413961 + 346108816 = 142781^2 + 18604^2 .

It is a cyclic number.

It is not a de Polignac number, because 20732522777 - 2¹⁰ = 20732521753 is a prime.

It is not a weakly prime, because it can be changed into another prime (20732522747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10366261388 + 10366261389.

It is an arithmetic number, because the mean of its divisors is an integer number (10366261389).

Almost surely, 2^20732522777 is an apocalyptic number.

It is an amenable number.

20732522777 is a deficient number, since it is larger than the sum of its proper divisors (1).

20732522777 is an equidigital number, since it uses as much as digits as its factorization.

20732522777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576240, while the sum is 44.

The spelling of 20732522777 in words is "twenty billion, seven hundred thirty-two million, five hundred twenty-two thousand, seven hundred seventy-seven".