20763852894677 has 2 divisors, whose sum is σ = 20763852894678. Its totient is φ = 20763852894676.

The previous prime is 20763852894647. The next prime is 20763852894731. The reversal of 20763852894677 is 77649825836702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20634933119761 + 128919774916 = 4542569^2 + 359054^2 .

It is a cyclic number.

It is not a de Polignac number, because 20763852894677 - 2¹⁰ = 20763852893653 is a prime.

It is a super-2 number, since 2×20763852894677² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763852894637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381926447338 + 10381926447339.

It is an arithmetic number, because the mean of its divisors is an integer number (10381926447339).

Almost surely, 2^{20763852894677} is an apocalyptic number.

It is an amenable number.

20763852894677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763852894677 is an equidigital number, since it uses as much as digits as its factorization.

20763852894677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1706987520, while the sum is 74.

The spelling of 20763852894677 in words is "twenty trillion, seven hundred sixty-three billion, eight hundred fifty-two million, eight hundred ninety-four thousand, six hundred seventy-seven".